I’m honestly not sure. I’d have to try them and just wasn’t that interested. I remember the 500XL in the Dean CFH guitar I used to have seeming quite different, but that was many years ago now, so I just can’t say. All I can say is these vintage ‘70’s & ‘80’s ones (‘70’s even more so) sound & feel great, a lot better than anything I’ve tried that’s non-vintage. I enjoy some of these other models even more than the 500XL fwiw, but it’s very good too
Really I’ve yet to try a not good sounding vintage pickup (like pre ‘80’s). They all have that organic, raw sound that the pickups today don’t have. Even the ‘70’s Carvin pickups I have are good, just imo not as good as things like BL’s, Mighty Mite’s or Dirty Finger’s