I have a fanatec wheel (mine works for xbox, pc, and ps3). I've never used the G27, but it's much better than any other wheel I've ever used. I love the fact that it's fully customizable (software). The clubsport pedals are better than almost anything else on the market. Worth the price IMO. I can't stand plastic pedals. The fanatec clubsport pedals offer great feel and you can get different spring rates as well. Supposedly they are developing a clubsport 6speed shifter which will be awesome. The plastic shifter is the only thing I don't really care for with the fanatec wheels.
Here's mine: