I have shot the 2" airweight. The DA triggers on them absolutely suck. Single action is ok. The factory wood grips are way too small- it was much easier to shoot with aftermarket boot grips, but even then, DA was tough (Had to aim several inchest low and left to hit). They will stand up to a lot of shooting, though extracting the empties from the cylinder can be difficult with some brands or after extended shooting sessions. There is a reason why Smith stopped making 617s with aluminum cylnders. The sights are sort of crude.The older steel-frame Smith snub-nose .22s are way more enjoyable to shoot, especially in double action. With a double action, I like adustable sights- I wouldn't want to try 'n kentucky windage a squirrel when I NEED to eat.
I wouldn't recommend the Taurus. Braztech CS sucks. I bought a Rossi accessory from them, and not only did they recommend me an item not compatible with my particular model (which I later found out was a known problem) but they were slow as can be in crediting my account. That said, their quality has improved in the last several years. I believe CDNN does have a really good deal going on their .17 rimfire revolvers right now.
I don't have any personal experience with the Ruger Bercat, but I do with the Single Six. The Single Six is very shootable and well made. While some people has problems with their politics, they make a great product and have great CS.