I was a fan of their old Pure Nickels. I tried the newer made by D'addario ones as a beta tester when the switchover occurred and didn't like them as much, but that was almost 10 years ago. I may give them another shot if they're still around. I think their flats are ok, but nothing to write home about. I'm not a big fan of their regular nickel plated rounds. They're ok tone wise when new, but their feel is just "meh"...kind of stiff and the tone quickly turns into a generic, lazy kind of scoopy type thing, if that makes sense. I haven't tried their SS sets since they came stock on most of their their American made basses, which was also before the supplier switchover.