Got a Fujitsu KB910 (€40/£32) now, a flat/softkey keyboard with white backlighting. The lighting is fucking dreadful, it works, but it is ghastly.|
However, the keyboard is great. I tried lots of keyboards, including the Apple aluminum thingy, and this is the best I had. I don't really notice it's there, which is a good sign. Importantly for gaming, it supports multi-key commands like W+D+Space, which very few keyboards did that I tried. Most importantly, unlike a twice-the-price Logitech keyboard I considered, that is claimed to be unable to do Shift+W+Space, which is out of question obviously.
It has the standard layout with well-separated function keys, also important for me, no experiments with re-arranged arrow keys, del/pos1/insert etc. Just the right original setting as God created it.
There's a cheaper non-illuminated version, the KB900 (€30/£24) if you don't need that stuff. Again, if you want good illumination, this one's crap. If you want a professional ten-finger keyboard, you're not really looking for flat designs anyway.
For convenient+play use, KB900 and KB910 havy my thumbs up.