A good 3" .45 you might check on is a Para-Ordnance (now Para-USA) Warthog (Model WHX1045R). 3" barrel, 10+1 capacity, single action. Reasonably accurate, dependable. OAL 6.5", height 4.75". Pretty good concealability, although a bit thick in the grip. Cost is plenty bucks, but likely no worse than the Kimber. My only complaint is that the recoil spring is pretty stout, it takes a lot of physical effort to strip and reassemble it. Since I live in S. Carolina where it is warm most of the year, I carry mine a lot, practice regularly, and endure the cleaning effort.