I've not used the 58mm, but I've always wanted one. As I understand it, it's not necessarily better than the 50mms, but its rendering is a little different from the "signature Nikon look". That said, the only reason it's more expensive is because of its appeal with collectors. Clean samples of the original 5.0cm f/2 also sell for inflated prices, even though it was a budget option back in the day (that's not to say it's a bad lens).

I too am a fan of pre-AIS lenses. They just click wih me for some reason.