In 45 ACP, I find that the single stack 1911 is the easiest platform for me to shoot accurately. The width of the frame, the grip angle and the ease to get high up with the grip just works better for me. I have a couple of full-size HK’s in 45 ACP and I love them both. They are totally reliable, very accurate and I enjoy shooting them, but I have to work harder to obtain the accuracy that comes easier for me with the 1911.
There is an absolutely unbelievable array of choices in 1911s. I have had excellent experience with Colt, Dan Wesson, S&W and the SigArms GSR in both reliability and accuracy. I’ve never owned a Kimber, but have shot several and they are very good as well.
In the Tupperware area, the butt-ugly Glock is ultra reliable, tough as nails and accurate enough for most folks. Price is right compared to some other choices. I carry a Glock 36 everyday.
If you are willing to look at 9mm, the Browning Hi-Power is a true classic, and a joy to shoot. Even with the double stack, it fits me, and many others, really well. The biggest complaint with the Hi-Power is the trigger, but that can be remedied by a capable gunsmith for a very reasonable fee. Remove the magazine disconnect while you’re at it.
Just my $.02, YMMV.