You best choice for double action 22 is probably a Smith 617. I don't own any Taurus revolvers and can't personally say yay or nay about them other than what I read here. Folks pretty consistantly don't like the triggers and Taurus revolvers seem to have a higher proportion of repair issues. So, I pretty much stay away from them.
The SP101 in 22 is no longer manufactured. It can only be found "used". It has a heavy trigger. Ruger makes a fine single action (Single Six) and some like the Heritage single actions. Again, I would personally not spend $100 or so on a Heritage revolver as I want my handguns to last a lifetime.
In the used market, Colt made 22 double actions (since 1950 or so) in the Trooper, Officers Model Match, Officers Model Special, Courier, Cobra, Diamonback, Official Police, and Trooper Mark III's. The Mark III and Diamondback are probably the last 22 DA's that Colt made. All of these are excellent revolvers. Colts little New Frontier or Peacemaker single action 22 is excellent also and in my opinion superior to anything on the market today (meaning Ruger)
With Smiths, it is the Model 17 or 18 (both K-22s) and excellent. There was also the Model 34 which is a J-frame like the current model 317. The current model is one of the airweight revolvers.
As mentioned, 22 revolvers were made by H&R, High Standard, Charter Arms, Rossi, and a few lesser known companies years ago.
The Trooper Mark III mentioned above is an excellent choice. I have a number of them along with a fair number of the 22 Diamondbacks. Excellent revolvers if you can afford them. The Trooper Mark III is the most affordable of the bunch.