I'm gonna tell you to go with a Smith, myself.. Ruger makes a fine revolver, too.. A Taurus will never give you a smooth trigger. I've yet to find anybody who will polish a trigger on one and if you could, it would void the warranty. I've never had a Charter but folks who have them have never had anything bad to say about them that I've ever heard.
If trigger is important to you, ask a gunsmith (with a good/proven reputation) in your area..
27 years ago, I had a Blackhawk in .22 Mag that I shot gators between the eyes with. Good gun.. The only thing that didn't die the first time I shot it was an armadillo that I just flat missed on. I grieved for days over that thing..
As far as price goes, get on GunBroker and look around. I just found 202 revolvers in .22 Mag. Not all were new.. I'd love to havea .22 mag revolver today! I left that Blackhawk when I joined the Army and it's long gone to a step brother/sister or in-law and passed down a generation or two by now.
I don't know what you're looking to use it for but if you're gonna put it on a boat or whatever, it needs to be stainless or nickel, but not pretty, necessarily..
Go on GunBroker before you decide what you can't afford..