This is only my thoughts, I am no expert. You have had experience with Colt 1911 from the military. If they were like most weapons that I encountered they were VERY well used and broke in. That is one reason they worked so well. Start looking for a well used and broke in 1911, get it for a good price and you will be happy for many years. Then pass it on down to your kids or grandchildren.
Good luck and stay safe,