They're good. Plenty of threads on 'em here if you do a search. I had some initial problems with ejected catridges coming down on my head. My trigger was gritty too, but broke in after 1,200 rounds. I did get great customer service from S&W and had a quickly returned pistol that works very well now.
For the smaller handed, like me, the grip is about as pleasant as I have felt this side of a single stack on any handgun, bar none.