I have one that I really like. Had it several years with minimal problems (one broken spring in the piston regulator that did not stop the gun, just found it cleaning it)
Mine is 3.5" and it functions with all 1 1/8oz loads and heavier. It has seen several cases of dove loads and an equal amount of 3" and 3.5" steel/hevi-shot. Very dependable, but you do need to keep it clean and keep an eye on carbon build up around the gas ports and mag tube.
I would buy another one if that says anything.
