I recently bought a new production Charter Bulldog and am really liking it. I also have a pathfinder in 22lr from Charter that is nice too. I have only handled the older Rossi revolvers with any serious intent to buy (passed based on finding a S&W for not too much more) and they seemed like decent revolvers. I have no real experience with their new stuff.
All that said, I would go with the Charter for a few reasons. The first is that Rossi is owned by Taurus now and while the guns are usually decent, if you get a lemon it will be a world of hassle to get fixed under warranty. Charter's customer service is amazing, both before and after purchase. Secondly Charter's are made in the USA by a good group of people that really stand behind their products.