Well, I hate to be negative (heheh) but IMO the PG+ doesn't sound too good to me. I've had a few different humbuckers in the bridge of a strat before...many were worse sounding than the PG+ (DiMarzio PAF Pro comes to mind). However, many of the Seymour designs that I've tried are much better. Those that come to mind are the JB and the Full Shred. I like the PGn in my strat, which I'm using currently, but I haven't tried a PGb (yet). Of course the amp has a lot to do with it; my PG+ sounded much better on my Marshall Dual Super Lead than it did on my other, lower gain, amplifiers. I think it's all relative to your style, technique and preferences, but for my 2 cents worth, I'd probably plan on replacing the PG+ if I bought a new strat and it was in there...
Farkus