They're getting hard to find.
There's been a lot of interest of late.
S&W's 940 is pretty nice. Ruger doesn't make the 9x19 SP-101 anymore - I'd buy one in a heartbeat if I saw one with a decent price.
I like the S&W a tiny bit better, because it's smaller (lighter and easier to conceal), but I think it's still big enough to handle the recoil of the 9mm okay. That said, the sideplate screws on my 940 started backing out on me this weekend after I ran 100 rounds through the revo. I tightened them down (always bring a screwdriver set to the range!) and kept plugging away (this is the first time it's happened, and I'm approaching 1K rounds thru the gun). The Ruger is more pleasant to shoot and will never fall apart, ever. Also, the Smith is DAO (mine has had a trigger job, so it's pretty nice) whereas the Ruger can be DA or SA.
I think the 9x19 is the most efficient .35-cal. round out of a snubby, and I think these are really great guns.