Congratulations on your qualifications!
I do like Glocks as they come - stock, because of the consistency.
Over the years Glocks have begun to "branch out" a bit.
There are a few differences between models and generations: compensated (GxxC), single stack (G36), interchangeable back straps (Gen 4), finger grooves and not, offered different frame dimensions (SF), full auto (G18), different recoil assemblies, drop free and not mags, straight blowback (G25)...
And I find that there are different shooting characteristics between say a G29, a G36 and a G21C.
The stock triggers are consistent.
Enjoy your Glocks.