I have the 3 inch I bought about a year ago, I never go to the range without it. The trigger is good enough that I seldom fire it SA. It seems built well enough to last a few hundred years. I usually shoot mine out to 25 yards with no trouble. This is my only gun with the "lock" ironically my favorite.
I did have an issue when it was new, spitting lead, S&W sent me a shipping label and had it back to me in 2 weeks with a new barrel and has been fine since.
Here's mine with the M60 Pro Grips as recommended by Mr Stainz.