I say this a lot, but I'll say it again. Look around for a Yamaha SBG 1000, 2000, or 3000 from the late 1970's to the mid-80's. I have an '86 SBG 1000 that I bought new. I've modified the wiring and the hardware a bit, as well as changed the pickups.

The 2000 & 3000 have fancier cosmetics, but the big difference is the brass block set into the body, under the bridge. The sustain available is amazing!

If you really want a Gibson, go for it. Though I think your ears might lead you in unexpected directions if you close your eyes while you make your selection.