This question comes up pretty frequently actually, and the two posts above are important to consider. When YOUR life is on the line, do you want the best of the best for peace of mind? Is that extra peace of mind (however large or small) important to you? Only you can decide whether that is worth the extra $2500 or not.
In that context, I will say that the two Kimber Pro-Carry and one Kimber Ulltra Carry that I've had have been completely flawless and reliable, and I have had no concerns staking my life on them. They now reside with family members as their CC guns, and are perfectly capable and reliable in SD usage. I let them go because my family members needed them more than I did, and my plan has been to get a Super Grade compact or Super Grade Professional for my replacement EDC. I have shot the XTAC compact, and it is a jewel and relatively unnoticed prospect in a CC gun, and I shot very well with it after the Hackathorne class last October, but I'm currently undecided whether to get that or a Super Grade Professional for EDC purposes. This will come down to personal tastes for me, as I will likely only be able to get one Super Grade before I retire and have insufficient income to get another, and I really would like to get my one and only Super Grade to be special, and therefore unlikely to use it for carry since it will have the blued finish. More than likely I will end up with a XTAC compact in black AT for carry, but that is all still up in the air. I suppose what I'm saying is, decide its primary purpose, what is highest priority to you, and nothing else we say will probably matter, since you will have found your answer within yourself.