Re: SD equivalent of Burstbucker 1, 2, 3 & Pro ??
The PG set is what ALL P's should sound like out of the box. Nothing humble about that opinion.
I've said it before: The PG sound is what we are talking about when we hear a great old LP. Not the 59, not the a2p, not even seths's.
The challenge with the original PAF's is that they used A2, A3, A4, & A5 magnets, which gave them very different EQ's. Plus they were handwound & the coils often unbalanced to some degree, and the neck & bridge PU's weren't calibrated for the positions. The "true" PAF sound covers a lot of territory, which is why you have SD making Seth's, PG's, '59's, APH's, and Jazz's to catch some of the variety in those PU's. Gibson has '57's, Burstbuckers, & the 490's (all with A2 magnets). Dimarzio makes the PAF, PAF Classic, and Virtual PAF (all with A5's). There are lots of other manufacturers with their own interpretations.
All these reflect the diversity of the originals (but only a part of it, as they're not using the other magnets). If you gravitate towards one (Aceman), it doesn't mean the others are any less valid. There is no "one" PAF sound today, just as there wasn't 50 years ago. Some of the originals sounded better than others, and some sounded great in one guitar, but not as good in another (much to the chagrin of someone who just paid thousands for one). I prefer '59's to PG's, but both have a PAF sound. All a matter of personal taste.
And yes, PG's are probably closest to BB's. But from many posts on this forum, PG's are usually perceived to have more definition & brightness than Burstbuckers.