Almost all of the service pistols are a reasonably good choice, these days. Arguing differences between them is essentially splitting hairs. The 1911 is a regrettable exception to that. They are extremely rewarding when quality hardware abs quality software meet, but reaching that blessed state is challenging enough that it's best left til later.
To start with, any of the common service pistols will serve well. It's worth remembering, however, that far more important than having the mostest bestest equipment is having the skill to use it well. Merely owning a Stradivarius does not a violinist make.
I suggest that you'd be far better served to buy a Glock 19, a case of ammunition, and a training course than the finest pistol Wilson Combat, STI, or Les Baer have to offer.
If, once you have some experience, you still want a fine pistol, by all means go get one. By that time, you'll likely have a much better idea what you want in a gun anyhow.