Re: Pearly / Seth
PGbs are brighter. Seths are warmer and "fuller sounding" IME. But the difference is not what I would call extreme.
A PGb with the onboard tone and/or volume knobs rolled down a hair or two is not a whole lot different sounding than a Seth bridge IME...and that's without even messing with the amp or other outboard e.q. controls. Not quite as easy to get a Seth bridge to sound like a PGb. Adding treble is always harder than taking it away. You need good quality outboard e.q. control to do it (but that means it can be done).
Seths and PGs make a good mix-match combo in any order. I like Seth neck and PG bridge together the most, though. The Seth bridge can get overly warm; I like my bridge pickups bright. And the PGn can get overly bright; I like my neck pickups warm. Seth neck and PGb gives you the best of both sets, IMO.