As was said, all good guns. No real losers.
The best way is to go to a range that rents them all, and iterate among them. Shoot 100 rounds thru the 1911, switch to the Glock, then the 92, etc, etc.
Don't shoot any rounds just for fun. Always be performing a measured test that is pertinent to the way you intend you use the gun, this way you'll have data to inform a decision, not just a "feeling". For example, take 3 identical targets. Put them all at the same distance. Shoot slow fire (for accuracy) at target #1 with the 1911 for X rounds, then target #2 with the Glock for X rounds, then #3 with the 92. Now you have an accuracy comparison.
Take down those targets, and put up three fresh targets. Repeat for 5-10 tests per gun. Compute the mean radius of the group sizes of each of the guns over all of the targets. Now you know which of the guns is the most accurate for you.
Do similar tests, for example shooting at speed. 10 Bill Drills (or whatever test you deem appropriate) per gun. Now you know which gun you shoot best at speed.
Etc. After enough tests, you'll have serious evidence which gun is best for you, in the way you intend to use it.
Some info that isn't dependent on tests:
The Glock will likely have the best aftermarket of the three guns.
The Beretta will likely have less felt recoil, since it's the heaviest gun in the test, and 9mm.
The 1911 will likely have the slimmest grip, favoring smaller hands or those who prefer smaller grips.
9mm ammo is much more affordable than .45 caliber ammo. Skill is dependent on practice, and if practice costs too much, will you still practice?
Just some thoughts...