I know this forum is for bolt action rifles, but my father bought my brother our first shotgun - a Smith & Wesson 20 ga. auto. I must say, that gun has been extremely reliable and is one of our favorites. In fact, my brother and I fought over who was going to keep that gun for many years. Well, let's just say that I just let my little brother keep it.
Still, I have never owned, or even shot, an S&W rifle, so I really can't comment on their reliability or performance. I just hope, for S&W's sake, that their new "I-Bolt" performs better than it looks.
Zachary