I don't know why they're "underrated" other than the fact that I just don't see them all that often. In fact, I don't know that I've ever seen a NIB one at any store, but then I don't shop at many stores, and I don't look for NIB guns very often.
Yesterday, I stopped by "Ali-Babba's House O Guns" and they had a really nice Rossi 851 in the case. Stainless steel, about the size of a K-frame, maybe a little smaller, vent rib, full underlug barrel, six shots, target sights. Locks up tight as a tick. Price is less than a Model 10, or even a Taurus.
So I put it on layaway. It's going to be a range toy, so I don't have much to lose. I like to try different things.