My two case-hardened models are fine shooters, I don't think I've ever read any negative comments about these. I don't shoot mine much, too many guns, and just prefer the 6" model 14 for general .38 Special plinking. As long as the price was right, I wouldn't hesitate to buy another.
They were not popular when first issued, and were often seen offered for sale new, for less than a standard used model 15 in excellent condition.
I don't see them come up for sale often these days, so I don't know what a fair price would be now.