I've never owned a Charter, but I've fired a few.
I think they're fine revolvers, and I'd buy one if I came across one at a decent price.
They did go through a period of poor quality control after the original company went bankrupt in the early 1990s, but that probably only lasted a few years under Charco ownership.
Doug McClenahan (? sp) also developed the transfer bar safety system for his original revolvers, which Ruger and later, everybody else adopted.