Oh and by the way, I decided on UT because the eBay market for vintage Campy is really strong. I picked up a nearly new UT with BB cups for less than I saw a compatible square taper Centaur Carbon compact, no BB, go for a few days prior. I had been leaning toward keeping the sq taper because I thought it would be cheaper, did not think it would make much performance difference, and worried that it would not be compatible with my old shifters and drivetrain. I was wrong about all 3 of those.