SIG makes good guns, but seems to have lost their way in the rimfire market. They had the Trailside, which I owned and though it felt good and handled well, didn't seem to hold up. The SIG Mosquito, which I currently own, is widely known to have problems. You name it, it will malfunction. It runs best wet dripping oil....they even pack it with them and that's a first for me to see oil packed with a gun. Some of the guys here will probably chime in on the Mosquito if they read this....I love the feel and design of the Mosquito, it mimics a centerfire semi-auto which makes it a great tool for swapping out during centerfire session to pick up on and address any bad habits that may have developed using your centerfire blaster.
Didn't know they made the P229 in .22 LR...looks kewl. I may get one...but only after it's been in the public for six months or so....that Mosquito really burned me and made me Sigspicious.
The Browning Buckmarks I own and the Ruger MK II all perform flawlessly. They don't have that centerfire feel and look like the Mosquito, but they do run. Even the P22 Walther I own runs fairly well...though when it dirties up it's needs to be cleaned to run.