I have the Steamroller. Having just assembled Kilo TT for my girlfriend, I would say that the frame quality of Kilo TT is decent, but Steamroller is built way better with worse steel and is heavier. I cannot compare the components of stock Steamroller and Kilo TT, as I have assembled the Steamroller with non-stock parts. I agree with everyone else: the Kilo TT parts are Decent. But for $300 more: you will get a way better bike IMHO ...EDIT: There is a reason why a Steamroller frame alone sells for the price of the complete Kilo TT.

Edit2: After reading TejanoTrackie's below comment, I have revised my post to be more "true" Good Luck!