OP, you probably should just have gone to the 1911 forum and hit up the Kimber sub-forum with your questions ... around here, the Kimber haters and random fanboys (the expected DW shill showed up in the very first response, with Colt, S&W and SIG to follow ...) just show up to pollute your thread.
Geez guys. He asks about choosing between two models on one brand, and no helpful advice whatsoever in almost every post.
Uh, really, bub? Way to let everyone know about your personal experience there ...
My two cents, for whatever it's worth: I've got a splendid CDP Pro and a nice Tactical Pro, so the Pro-length would be my recommendation -- with the disclaimer that I've never had a Kimber Ultra, but did own two Springfield Armory Micro-Compacts, SA's version of the Ultra. Pros are easier to shoot, manage recoil better and the inch difference in barrel length affects concealment nought.