I've not been too happy with my experiences with the SR22. I would like to try out the TX22 but like others have said I don't think they are in the same class as the 22/45 or Buckmark.
I have the TX22 Competition, it's a lot of fun, I have a Holosun 507 mounted to the barrel. It's reasonably accurate for a new shooter like me, and has great ergonomics. I've also heard from others who have tried it that the trigger feels great, but I don't have a lot to compare to.