Pros: Extremely comfortable to use, key illumination is great. The software was really easy to use as well.
Cons: The "Roccat Talk" feature is only usable if you own both the keyboard AND a Roccat mouse. I would love to use that feature with my Cyborg R.A.T. 5. Also note that the device software was not included in the package, you have to download it from Roccat's website and for some reason, all the driver info on the site was in some Northern European language, even after I switched it to English at the top.
Pros: Bunch of features for gaming, extra mod keys. Software has worked OK for me on win8. Keys feel good with even pressure. Construction seems solid compared to other keyboards.
Cons: Use the board for MMOs and it has a rollover issue shift+WASD (any combo of 2) then 4 key causes the 4 to not be recognized, sort of a big deal when you have bindings to an action bar. Tested in word to confirm. It could just be the one I got as it passes the double shift spelling test.
Summary: This is a very nice keyboard, many features and good build quality. There is however one glaring oversight with the design. None of the media keys across the top are backlit. In addition to this the icons on these keys is dark grey (on a black background too!). This makes it impossible to see the icons in these keys even in daylight, I was ready to give this 5 stars easily but this is a rather silly design flaw...