I have a great little S&W Model 34 with a 4" barrel that shoots circles around my Brownig Buckmark. Great trigger in DA and it's a hair trigger in SA. I really enjoy shooting it. They go for less than $500.
Taurus also makes a reasonably priced 22 revolver, their Model 94, 9 shot with a 5" barrel for under $400.
For less than that, you could look at an older Iver Johnson or H&R.
Here's a nice one on Gunbroker.com going for under $200.