Never tried either brand but have played Staples&P-90's .Judging from the designs:Thorn GT-90 has staple magnets as pole pieces/Lollar P-90's have bar magnets with screws for pole pieces.Two totally different designs that cannot be compared fairly.If you meant sound instead of design:The staples would have more note separation/chordal definition.The bar magnets will have warm sound like a P-90 shound.AJ Love i hope this answers your question.Many TGP forum members have tried or own these models. Would have been great if at least one could have replied.I see you have 1,744 Posts.Sure you must be aware you may not get replies if the Thread is not about a controversial topic.
Great positive replies! I think John Mayer is a fine singer/songwriter/guitarist.Totally different design would not be fair to compare. As stated above never played either pickup model so i can not comment on how they sound through a Dumble amp. Thank you nice fellows for asking.The 2 of you probably were of great help to the original poster.
Haven't played a Lollar P90 (well that might be a lie, I've played a bunch of P90-equipped Thorns but I don't know if any of those were Lollar pickups) however I owned a Jr 90 (which had the original stapletop P90 pickups Ron made, similar to the current GT90 pickups offered now) so I can comment there.
The stapletop pickups, as someone else mentioned previously, had killer note separation and chords sounded very full. As an aside, I have the first set of Ron's new GT90-H pickups which are custom stapletop P90-sized HUMBUCKERS and the note clarity is killer on that set too!
I have Thorn Pasadena humbuckers in my other Thorn and I think I'm digging the stapletop hums even more for note clarity, but I'll have to A/B them a bit more since I've only had the GT90-H equipped guitar for a week or so now.