Last winter I acquired two more vintage Wilson R-90's (circa 1975)
I sent them to Ron Price at Nomad Golfwrx and had them refinished, remilled and reshafted and added them to my collection.
I believe that a more versatile wedge has never been made.
I use it for cut lobs, blasting out of bunkers, pitch shots from tight lies, full shots from 70 - 90 yds, and any shot that requires a particularly deft touch.
I have tried to replace it a dozen times, and have never been able to find a club that I can comfortably use to hit all those shots.