I don't have an Ultra CDP, I have a Compact CDP.
I think the Kimber CDP line is great. They seem to be well made. My compact has less muzzle rise than a full size Springfield Loaded model. Shoots very nicely.
Couple of negatives;
My CDP had a problem with the slide locking back prematurely. Not always, but enough to be a problem. I have read that this is a frequent problem with Kimbers do to the fact that the slide lock sets back just a skosh compared to most 1911s. I fixed it by sanding just a touch off the face of the slide lock so that it could not get pushed up by the random bouncing bullet nose during firing.
The double spring set up on the ultra may work great, but you better order a spare set now, because you don't find them sitting on the shelf of your local gun shop.
The firing pin safety on the series II Kimbers have caused faiures to fully chamber rounds in some guns. Might want to read up on them before you buy one. You may be better off with an older model.
That last bit is internet heresay, not experience. But I do remember a bit of a stink about it on another forum.
This may or may not be a place to look.
www.pistolsmith.com/index.php