The Jackson USA Facebook group has a lot of members and stuff changes hands pretty frequently. There are some really fanboyish people there though, and some boomer dads. However, it's one of the better guitar Facebook groups. As far as how the quality compares to ESP Japan. That's tough to judge, as I'm not SUPER up on their stuff. Being seemingly rarer than USA Jacksons. Personally, the examples I've played have been comparable. Jackson doesn't do the crazy stuff you see from ESP (anymore, they have done weird/crazy stuff in the past). I think the general concensus that exists out there is that ESP Japan is more consistent than USA Jackson. Jackson has a few eras of production with their own quirks. Usually defined by where their custom/USA shop is located. The Jackson Custom Shop has a reputation for "surprises." Colors being weird one-offs, dealer runs that get mysterious extra guitars (likely due to messing up the build, starting over, and shipping out both guitars), etc. Current era custom/USA stuff has been more consistent, but also more limited in options as the shop is completely swamped with orders and they're turning down work to get through the backlog of "SL2H in this color, that color, etc." They probably hit a low point in the late 90s and early 00s. Though, my SL2H from 2006 is the best guitar I've ever played.