Re: Gib490R/498T to Duncans comparison.
I have the 490r/498T set in a Les Paul Supreme and I'm yanking them for a set of Seth Lovers in gold.
I have a couple of other Les Paul Classics, and I replaced their 496R/500T Ceramics with Antiquitys in one guitar and the MF 50th Anniversary A2 Seths in another.
I play in a classic rock/blues/country/jazz do-itall cover band. I use Mesa Boogie amps, and we tend to play at low to medium volumes. It's a wide variety of music, though not speed-thrash-grunge-death-metal--LOL! I have a lot of gain on tap with the Mesas, but I tend to go for the smooth, singing distortion. The Ceramics just compressed everything too much, though into a non-MV Marshall or Twin, they should sound great--I like their tone. I don't need a super high output pickup.
The 490R/498T set though, again--Simon nailed it. They sound good for hard rock--but to my ear, they don't work well together as a matched set. Get your amp set up for one--and the other one is totally wrong. The Duncan neck pickups have a clarity to them that is missing in the Gibson 496R pickup. The Gibson bridge pickup has nice edge to it that would be great for certain kinds of music--but it doesn't fit my style. (It's probably most similar to the JB sonically. I have a TB-4 in a bolt-neck guitar, so it is a little heard to tell exactly.) Take the mud out the the neck pickup--the bridge is too bright and edgy. They just don't seem to work well together.
Neither the Antiquity or the Seth Lover is potted and they may be susceptible to microphonic feedback at high levels. When I have noticed feedback, it has been musical and controllable. If I though it were going to be a problem with my LP Supreme, I would have chosen either to have the Seths potted; or I would have opted for the Pearly Gates set.
I hope to get the Supreme into the luthier this week to have the work done--I'm also adding a set of RS Guitarworks pots. It has been a long wait, but I hope to get it done soon. I will post with my impressions when it is done.
Bill