I am not a Taurus basher, and have had one or two in the past that I liked however the 24/7 was one that I truly despised. It did look and feel good, but after a couple hundred rounds, the little plug in the back of the slide fell out and that made the Loaded chamber indicator malfunction...I played heck with taurus getting the parts to fix this...then when I got the new one...same thing happened again. I hated that pistol and was luckily able to get rid of it for what I had paid.
If you want long term durability and availability of parts, Definately a 1911 would fit that bill. Its been here a hundred years and I think parts for that are probably the most common pistol parts ever. And...You just cant go wrong with a 1911