I have about 3k rounds through my G34 and I really like it a lot. Shoots great, feels good in the hand, reliable, easy to maintain, etc. I swapped the stock sights for a set of truglo night sights. I would get Meps next time.
There are only two things i dont like about it. (1) it looks ugly. (2) it's ever so slightly more complicated to field strip than a SIG or a P99.
The trigger pull on a Glock is a little different than those common on other guns. Some people like it, some don't. I am starting to get used to the SA pull on a P99 and I think I like that better. That being said, the G34 is a lighter pull than other Glocks, which helps.
In any case, you can't go wrong with the G34 and you will enjoy it a lot.