I have a late '70s production Charter Arms Undercover that I'll *never* part with.
The deal with Charters is that the design is VERY good. The original engineer was a former Ruger guy and it shows - in typical Rugeresque fashion, the grip frame with triggerguard "forks up" into the back of the primary (cylinder) frame. This eliminates sideplates, a significant advantage. They also lock up at both ends of the cylinder.
Late in the lifespan of the original company (early '80s) quality suffered as they ran into a cash crunch. The design was then bought out by "Charco" and quality went well and truly into the toilet or worse. The quality of the ones from my gun's era is startlingly good; the hammer and trigger are case-hardened (for real) and the bluing/finish is excellent, if weird: they didn't even try and match the finishes between the steel and aluminum areas, so it's got a black cylinder, *brown* cylinder frame, deep high-gloss-black anodized aluminum bits. And the lockup is rock solid, the barrel/cylinder gap is down around .002" and the timing is perfect. It *shoots*.
This new Charter2000 company that's brought back the design yet again (because it's a damned good one!) seems to be doing better. They've gone to strictly CNC tooling, but kept the finishes plain to reduce costs. Still, ugly as some are, they DO seem to work well. I was cautious at first, but can now look favorably on most models, with cautions only on the 44Spl flavor (go easy on the hot stuff!) and the aluminum 38s.
That said: between the current "Off Duty" and "Undercover" designs, I'd rather have an Undercover, and here's why: it uses a steel primary (cylinder) frame but an aluminum barrel shroud (steel core) and an aluminum grip frame. The resulting 16oz weight is a nice compromize between the weight of a high-bucks "unobtanium" gun down around 10 or 12oz, and an all-steel gun of around 19oz. I consider that 16oz weight to be *perfect* for a 38+P capable snubby, a great balance of low packin' weight yet enough "beef" for comfortable and fast shooting.
The Undercover can take +P. I wouldn't make that the "sole diet", but that's true of most 38snubs. The aluminum Off Duty, I'd go REAL easy with +P.