When comparing Corsair K70 vs DIY keyboard, the Slant community recommends DIY keyboard for most people. In the question“What are the best keyboards for programming?” DIY keyboard is ranked 24th while Corsair K70 is ranked 45th. The most important reason people chose DIY keyboard is:
There are many online sources that give comprehensive information on how to build your own keyboard.
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Pros
Pro Works with all Cherry switches
The Vengeance K70 uses Cherry MX mechanical switches throughout the keyboard. They are also easily replaceable for those that would like to try out different switches or use a certain combination of them for gaming.
Pro Configurable lighting
RGB backlighting is fully programmable. Or you can choose a monocolor LED (red or blue) and get a USB passthrough.
Pro Dedicated media controls
Since media keys don't require a combo keypress, they can be used with just one hand.
Pro Easy to clean
Beautiful, solid brushed aluminum backplate makes the keyboard easy to clean.
Pro Easy access to information for the building process
There are many online sources that give comprehensive information on how to build your own keyboard.
Pro Users can create their own design
You can create your own design, hence guaranteeing that it will be one you like.
Cons
Con Software is difficult to figure out
The CUE software needed to program the backlighting and keys is difficult to understand, making customizing the keyboard a cumbersome chore.