All are good.
If you are just punching paper,you might want to go with the Kimber,as the trigger pull will be better than the others. Reliability will not be that big of a deal,and you call doll up a 1911 all you want.
If you are not opposed to the da/sa transition, I dont know if there has ever been a better 45 produced than the Sig 220. They are as accurate out of the box as any custom 1911 I have seen. Regardless of what some post,you will not find a more reliable 45 either.
If you want a 45 to shoot a whole lot,and abuse a little, consider the Glock. Face it, they are as ugly as they are going to get the day you buy them. They are also very reliable,and you can get a lot of add ons for them.
And now,H&K.
It is true that many like the USP series. All I have come across have been reliable. It just seems to me like they knocked off features from many other designs, mixed them up in a blender, and said "HEY LOOK AT ME NOW!!!!" To me they are Rugers on steroids,with the high bore axis and clunky look.
I guess if I could only pick one,it would be the Glock. Parts availability,reliability out of the box,and ease of manetanince would be my deciding factors.
Like I said,all are good,it just comes down to which you like and shoot the best.
Have fun!