I have several Colts, two of which were competition guns accurized by Jim Clark (Benton, LA). They are fine shooters, I also have a 220 and a 245 Sig, both are excellent guns, but for me, I still prefer the model 239, I have both the .357 and .40 barrel but as I said, I prefer the .357.
I have many friends who are DPS troopers, Texas went to the .357 Sig several years ago. In talking to my friends, almost all of them have nothing but high praise for the .357. (Except a couple of die hard ex-Rangers. To them the .45 is the only gun, a tradition thing I suppose.)
As for the ability to handle a .45, I will never forget one of the first 2700 pistol matches I shot, on my left was non other than Jim Clark (a High Master), and on my right was a female Deputy from the Monroe, LA area, about 35-40 years old, she must have been all of 5 ft and likely weighed in the 110 range, she was a Master. (can't remember her name, but she was featured in the "American Rifleman" several times back in the mid-late 60s) I was so intimidated I put my first two .22 rounds in the dirt about 20 feet in front of my station. I was amazed at their targets each time we went down to check them, Jim had cut the X ring out, and she was close. She proved to me that a little woman can handle the "big" gun.