Glock is a good gun, as far as glocks go i'd go for a 17-9mm, they perform great and you can run any style of 9mm ammo through them that you want and they'll shoot it all just the same...and they are so easy to clean. Just a drop of oil on your fingers, touch the 4 main posts, and you're done. swab it a few times and you're ready to go.
PLUS contrary to popular belief they are extremely durable guns, some of the local law enforcement around this area did a test when they changed over the standard sidearm to a glock and they tied a glock 17 on a string then to the bumper of a police cruiser, drove it 12 miles from the station to one of the more distant shooting ranges from their area (mind you it was hitting the ground the whole time at an average of 35-55 mph, I witnessed this first hand) after they got it there they loaded in a clip and began popping off rounds, an average of 3-5 inch groups at 30 yards. Needless to say I was impressed.
My first 9mm pistol was a Bryco Arms - Jennings Nine-ca
the pistol was used and had been dropped, but after a good cleaning and a thorough internal inspection to see that nothing was damaged, i shot it...I was actually impressed at the accuracy that this gun held, usually the "saturday night special" type guns don't hold any justifiable pattern at all but I could manage a good group with it. I actually still have the gun to this day as one of my more favored plinkers(mind you it is JUST a plinker).