Alrighty, I've been researching the Campy UT vs PT cranks, and boy oh boy what a Pandora's box that is!

Am I correct in saying that the UT is less tolerant of BB shell deviations and is prone to side/side play (requiring out of warranty shim solutions), whereas the PT gives a little more leeway?

If this is true, I'm comfortable sticking with a full 2013 PT-based group rather than trying to source one of the 2010 UT cranksets. If not, I may actually take it down a notch, and go with '13 Centaur 10 with a Record/Chorus 10sp square taper crank.