Wow - very impressed with all the info on wheels (recently found this forum via Google).
I have a Logitech Gran Turismo wheel on my PS2 and I've always been delighted with it. Given the variable opinions I've found re. the MS wheel (which admittedly does sound good), I've decdied to order a Drive FX.
I'll post my experiences in due course, in case there's other new 360 owners facing the same decision.
PS (o/t) - first impressions of Forza 2 - superb. Stopped playing it as want to wait for the wheel! Especially like the way crashes and bumps are penalised. I'm not fussed with visible damage, but having penalties makes the racing so much more edgy. It's the main thing I found missing on the PS1/2 GT games, which I am also a fan of.