The 238 is a great gun. There is a current recall on certain ones... I can't remember a pocket pistol being released without a recall. I'm a big believer in Sig and all that they do, if you do have a problem their customer service is TOP NOTCH. So... buy from Sig with confidence.
I own 3 Sigs, none have had problems... and I'm one of the rare people who had GLOCK that was a lemon... However, it got taken care of. I didn't run around yelling at the top of my lungs that Glock's are all lemons and all junk.
I have a hard time believing that any gun is a chronic lemon from what i read on forums... there are a lot of mall ninjas that are usually the loudest voices on sites like this.
So, buy from Sig with confidence... the 238 is a beautiful gun, and more often than not you're going to have a peach... Check the recall for the serial numbers affected, and pay attention to it while buying.