Happy Belated New Goldtop Day!!! Two things. First, I love Goldtops. See my R7. A good Goldtop is an absolute gem in any Les Paul collection.
Second, Gibson P90s are great. I have no doubt that Lollar, ThroBak or whomever else makes a great P90 but I’ve never disliked the Gibson ones I have in my SG. I think the only other ones I’d honestly be curious about are Wolfetones. But I love the P90s in my SG. They’ve got PAF like mids but with some single coil snarl. Love em.
As to Gibson QC, most of mine have been bought used so any issues they may have had were probably corrected in some capacity over time, if they had them. Same with my Heritage guitars as they pretty much built the same. On a new Gibson, the only thing I ever encountered was the nut cut too deep on my SG. A trip to my luthier and it was sorted out with a new unbleached bone nut. Which I preferred anyway. The only issue I’d have with buying a brand new Gibson is the prices today for some of them.