Walther P22 "Military"!
Just over 600 rounds so far, and it's been almost perfect. Exceptions are the Federal Spitfires, which are funny-shaped 36gr hollow points, and the Aguila Sniper Sub Sonic, which fouled the chamber badly and caused full-length LR cases to stick.
It's accurate but hard to shoot well, but I'm getting better. It's loud and has a neat little jump to it, and makes a nice little fireball at dusk. New shooters are loving it.
The only thing that concerns me is the evident wear on the inside of the aluminum slide in some spots, but after about 300 rounds it stopped getting worse, so I guess it's "broken in" now. I hope it holds up, because I plan on shooting the SNOT out of this thing. Plus it's light enough I can pack it all over the woods, even when I'm flyfishing.
Right now, I'd recommend it to anyone looking for a really fun plinker -- but I'm waiting to see how it holds up after 6,000 rounds and 10,000 rounds -- like a .22 should.