I carry my VP9 pretty much all the time now. I've put nearly 1,500 rounds through it with only a couple hiccups that were either my fault or the fault of the ammo. It ate everything I fed it without any complaints. Even some questionable gun show reloads. The only complaint I have is the lack of preban standard and high cap mags, which you can get with a Glock.
If you're going to carry a Glock, I would go with a Gen 4 over a 5 for the QC reasons already mentioned. I don't have one so I can't personally testify, but the consensus here has always been that the G19 is the go to carry gun.
If all you want is a 9mm range toy, I would pick up an M&P 9. Maybe the range kit as others suggested. Your 1911 is actually the perfect range toy, and I would totally shoot it if I was you. I have an E Series and I love shooting it.
Ultimately it comes down to fit and how it shoots for you. Try out a few at some place like Mass Firearms where you can try before you buy. See what you enjoy best and buy it. I don't know if they rent out Glocks, though, and you certainly can't buy a Gen 4 or 5 from an FFL.