ErgoDox EZ vs Azio Backlit Mechanical Gaming Keyboard

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.

You can arrange each side of the keyboard to match your hand positions. Helps keep your body straight and improve your posture.

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.

The ErgoDox has an open design, so if you want to modify anything at all, you can fork the Github repository.

There are more keys which are easily accessible for touch typists than on common keyboards.

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.

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.

Because of the nature of ErgoDox, within an open source community, there are advancements in firmware being made continuously.

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.

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.

The pre-assembled version offers an extensive 2-year warranty, provided you haven't taken it apart or physically broken it.

You can put the keyboards together, making it very easy to carry around.

While the RGB model costs $80, it provides full per-key RGB lighting complete with different effects. While this doesn't offer any extra functionality, it adds some flashiness to your build.

The base model of the keyboard offers a white backlight (no RGB), and the brightness of the backlight can be adjusted to suit the ambient lighting.

There are two switches to choose from: Kailh blue or Kailh brown. The blue switches offer a bump at the activation point as well as a click, while the brown switches offer a bump without the click. These switches are slightly heavier than the corresponding Cherry MX switches, but are similar in the way they act.

The bezels of the keyboard are small, and the design of the board is minimal instead of gaudy gamer-focused designs. It has a volume roller in the top right accompanied by the mute button which makes the board feel more premium than it's price point would suggest.

The keys also appear to be floating - while most keyboards have their keys recessed behind the casing, these ones aren't. this leaves their side exposed, and makes for a more unique design than other boards.