Don' know about the Rossi , but have been shooting TC's since the 70's, I really enjoy them, the older contender ,and the Encore, haven't tried the new Contender G2.Most of the barrels I have are accurate ,all are accurate enough for hunting.
I probably like the Contender a little better, it's lighter,but the Encore allows more caliber choices, and will take anything most people would care to shoot.I've had mine foe awhile ,even the Encore was bought the first year they were out, and I have heard some complains about the newer one,those made since S&W bought the co out. Don't know just what I've heard. Will probably never know unless one of my friends buys one, I think I've got all I want.
For more info you might check out Specialty pistol forum, it's a lot about single shot pistols, and there is a lot of knowledge there.
Alex