I do not know your experience level, but am hoping you have the basics down.
The Glock (in my opinion) does not require too much thought to shoot. No thumb safety, easy to reload, some mods are available.
Beretta is heavy, bulky, even less mods available.
1911, heavy, mods are available everywhere, easy to learn (but still requires some thinking on the shooter's part), easy to get repaired or upgraded.
If you do not have the basics down, then I would suggest that you look at a revolver to learn them on. A revolver does not lend itself to "spray and pray" practice, and any problems in learning the basics is readily identified.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)