When comparing ErgoDox EZ vs Das Keyboard 4 Professional, the Slant community recommends ErgoDox EZ for most people. In the question“What are the best keyboards for programming?” ErgoDox EZ is ranked 3rd while Das Keyboard 4 Professional is ranked 11th. The most important reason people chose ErgoDox EZ is:
You can map any key to any position easily using a simple GUI, including making hardware key layers. And, since the firmware is open source, you can modify it to do anything you want. Many of the hardware components can also be altered/replaced by equivalent parts.
Specs
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Pros
Pro Ultimate customizability
You can map any key to any position easily using a simple GUI, including making hardware key layers. And, since the firmware is open source, you can modify it to do anything you want. Many of the hardware components can also be altered/replaced by equivalent parts.
Pro Split design lets you optimize positioning
You can arrange each side of the keyboard to match your hand positions. Helps keep your body straight and improve your posture.
Pro Comfortable for those with broad shoulders and large hands
Because of its split design, the ErgoDox lets you optimize the positioning of its halves according to what's best for your body shape, even if you have broad shoulders and large hands.
Pro Open source
The ErgoDox has an open design, so if you want to modify anything at all, you can fork the Github repository.
Pro Many easily accessible keys for touch typists
There are more keys which are easily accessible for touch typists than on common keyboards.
Pro More actions for the thumb
Unlike other keyboards, like the Lexmark M15 and Cherry G80-5000, where the only action performable by the thumbs is punching the spacebar, ErgoDox has extra keys placed near the spacebar, within thumb reach. This prevents the thumbs from being a bit redundant.
Pro Key rows are aligned
Almost all the keyboards have a small row offset (for example, on a standard QWERTY keyboard, the A key is not directly below the Q key. On the ErgoDox, this isn't the case: keys form straight columns. Together with the movability of the two parts you can stretch your fingers straight on, not slightly sidewards. This helps with touch typing, since you just need to stretch your fingers straight onward to reach the key above, rather than stretching it onwards and sideways.
Pro Firmware updates
Because of the nature of ErgoDox, within an open source community, there are advancements in firmware being made continuously.
Pro Customization settings saved on the keyboard
With most programmable keyboards, you have to use their software in order to save and reuse your customizations. Using such keyboards on other systems "degrades" them to their default setting. Since with the ErgoDox the settings are saved directly on the keyboard, no matter the system where you're using it, your macros, tap dances and layers are always available.
Pro Split design forces correct hand position
The Ergodox doesn't allow you to reach over the centerline to hit T and H with a single finger, or whatever other bad habits you might have. The split design forces you to keep your hands in the right position.
Pro ErgoDox EZ offers a 2-year warranty
The pre-assembled version offers an extensive 2-year warranty, provided you haven't taken it apart or physically broken it.
Pro Small to carry
You can put the keyboards together, making it very easy to carry around.
Pro Reliable and long-lasting mechanical switches
Das 4 Pro keyboards feature Cherry MX switches, know for their established reputation. They have excellent durability and outstanding performance. Users can choose between the Cherry MX Blue and Cherry MX Brown switches. The main difference is that the first ones are clicky and the second ones are quiet.
Pro Conveniently located two-port USB 3.0 hub
The location of the hub, on the top right side, makes adding a mouse very convenient.
Pro Solid, durable construction
The Das uses the best materials available to create a stable, durable board. Some parts are made of aluminum which prevents any flexing and others of resistant textured plastic, making this a keyboard that withstands damage very well. And the switches are genuine Cherry MX switches, which are durable and reliable. The keycaps text is laser etched, meaning it withstands the test of time pretty well.
Pro Beautiful design
The Das 4 Pro keyboard has a beautiful nearly-minimalist design. The volume wheel and slight protrusion on the top right help it stand out from the crowd. The front is covered with a matte aluminium finish that resists fingerprints.
Pro Ultimate version looks very slick
The Ultimate version of the keyboard looks badass with its blank keycaps.
Pro Top panel resists fingerprints and provides rigidness
It has an aluminum top panel which not only feels great, but also resists fingerprints and prevents any flexing.
Pro Comes with dedicated media controls and an oversized volume knob
There are three rectangular media keys: previous, play/pause, and next. Just above the next key there's a circular mute button, and on the right of all the other media keys is a volume knob that can be spun to adjust the volume.
Pro Very thin
Das claims that this keyboard is the thinnest mechanical keyboard available on the market.
Pro Each key has the perfect stabilizer for its size
This keyboard uses an innovative mix of Cherry and Costar stabilizers. Costar stabilizers have many advantages, but they don't work very well on large keys, like spacebars. To get the best of both options, Das uses Costar stabilizers on all keys, except on the space bar, where it uses Cherry stabilizers.
Cons
Con Expensive
Getting a complete kit from Massdrop costs about $400. Sourcing each part individually ends up a bit under $200.
You can get a preassembled keyboard from ergodox-ez.com from 270$ with 2 year warranty
Con Firmware has some hiccups sometimes
Usually this doesn't get in your way, but sometimes it does.
The repository is actively developed, so errors should be resolved within no time, or at least you get decent help.
Con Needs to be assembled
This can be fun, but some people just want a working keyboard without having to spend three hours with a soldering iron. It's tricky to find pre-assembled ErgoDoxes, and they're not mass-produced. It is also possible to commission an enthusiast to build one up as well. Some Massdrops of the ErgoDox kit did came with an option allowing one to choose whether to have it pre-made or not.
However, you can order and ErgoDox EZ preassembled here.
Con Tends to move around during use
Due to its split structure and lack of sturdiness, it tends to move during use.
Con Difficult to source individual components
You have to either source the individual components and build it yourself or wait for a Massdrop group purchase.
However, you can order it preassembled here.
Con Hard to use with small hands
Because of its size, it's hard to use for those who have small hands.
Con Has numeric keypad
If you are an accountant, a numeric keypad might be an advantage. But to those of us who want to use a mouse, it's a definite con. Moving the mouse further right opens the shoulder joint and is just bad ergonomically.
Con Not suitable for use in the dark
The Das 4 Pro keyboard doesn't have any backlighting. This means you will probably find it a bit hard to use on a dark environment.
Con Potentially uncomfortable to use, depending on your wrist placement
The edges of the keyboard are not rounded, so it can be painful if you rest your wrists on them.
Con No calculator button
There's no calculator shortcut button.
Con Not very portable
The Das 4 Pro keyboard has external dimensions of 18'' x 6.8'' x 0.8'' ( 457 x 173 x 20 mm ) and weight of 2.9 pounds (1.3 kg). Hence, it’s not an easy keyboard to carry around. This makes the fact that it’s the slimmest mechanical keyboard on the market loose value.
Con Expensive
This keyboard is quite expensive, especially if compared, in terms of extra features, to similarly priced keyboards made by other brands. It notably misses features like USB passthrough or RGB lighting, which is surprising for a keyboard with a retail price of $169.