Just bought the S1 version and it's fantastic. Best £12 I've spent. It's brilliant fun even if you don't win. Only thing is, I'm sure it's got harder since I won my first 3-lap Pro race on the demo!
Fave car so far is the lotus 7-alike. Headphones on, really loud and you're there. Can't imagine what the really fast cars are like. I guess I'll just have to buy it and find out.
Off to do some skins for my cars.
Buy it!