Layout is important, if you don't like the non standard steelseries layout you may be unhappy. On the other hand the 6gv2 is well priced and seems a solid board.
The XArmor has cherry blue tactile switches as rightly pointed out by SatoriToken.
I don't believe the XArmor (or Deck ?) come with any macro software, so I guess you would need to use autohotkey or the like if you needed macros bound to keys.
The Razer does come with it's own macro...
Mechanical and backlit narrows your options down somewhat.
In saying that I would consider the X-armor keyboard, I am sure the Deck is fine but I just really dislike the look of it...
You are missing my point I believe. I am not saying this will effect every game, just that potential buyers need to go in with their eyes open.
Key Roll Over or the lack of it most definitely will impact on the playability of certain games.
You stated "the vast majority of keyboards have...
That's quite a statement to make.
The Razer is 2KRO, so certain combinations of 3 simultaneous key presses will fail. That is definitely something people looking to purchase a "gaming" keyboard should be aware of. Trust me I am talking from experience.
Sounds weird, but I have a sidewinder X4 connected via usb and a Compaq mx11800 connected via ps/2 and both work perfectly in tandem, you could have the best of both worlds ;)
Depends what you want the keyboard for, but if it is for gaming there is no comparsion in my opinion.
I bought a Razer Lycosa (Similar to Arctosa I believe) and returned it a week later due to the fact that I could not press the key combinations I wanted due to the roll over limitations on...