From my experience with mine (1.5 months and +2500 rounds of at least 8 makes/models), it's finicky with the ammo you feed it. The only round I can feed mine without a problem (FTE or FTF) is CCI mini-mag solid point. That makes the ammo not as cheap as I'd like, but still better than 9mm (the next cheapest ammo). I've also had some aiming issues, but those are me and not my firearm (my friends will fire mine and keep it all in the 10 and 9's while I'll be out near the 4 or 5).
Basically, if I were to make my .22 purchase all over, I'd go with a Ruger or Browning. Yes, they're a pain in the rear-end to clean, but they're much more accurate (not sure on the durable part).