I've been lurking in the fixed gear forum for awhile now and about three weeks ago I went to my LBS and bought an IRO Mark V and now I'm hooked. I had the LBS build it up with Vuelta cranks, Sun rims, IRO hubs(they look good) and I put Shimano 105 pedals on so I could use my road bike shoes. I was tempted to build my own but took the safe route for my first fixie. I also had Shimano brakes put on and after putting in some time on the bike I'm comfortable on the fixed gear. I have been a roadie for years but find that in some places I'm about as fast on the fixie. For my next new road bike I guess I don't need 10 speed after all!!!!!!!!!!!!!