You don't really see them that often, and I kinda regard it to be the neatest Glock. If I could only own one of them, it would be the G34 for the perfect sight radius and sweet shooting. The G17L is just a little bit less muzzle-flip, same nice trigger and sights, more velocity, and the looks of the longer slide and barrel just make it a really fun piece! You'll like it! It's a blast to shoot.
Now, if you don't already have one, buy a G34!
By the way, if you decide you don't need the G17L for some reason, let me know! I want a matched pair!