I plan to purchase one of these two within the next couple of weeks. Are there any advantages of the compact over the Ultra model. I have read in past posts that both are very accurate. It seems the Ultra would be slightly more concealable and a little lighter, but I don't want to suffer any performance loss. I have heard some folks knowledgeable about 1911's say that the Ultra carry size is close to the smallest you would want to get with a 1911, and might even be too small for dependable service. What do you think? Also, what is good carry rig for either?