I've had several late 70s Deluxe Reverb amps, and they all sounded great IMO. For comparison I have also owned a 66 BF and an original drip edge SF DR which was the most trouble prone of all of the DR's that I have owned. If anything the later SF DRs to me had much more clean headroom. TDPRI member Silverface has posted here in the past about doing a shootout where they directly compared BF / SF and late SF Deluxe Reverbs. As I recall he said that he and his buddies agreed that the amps all sounded pretty much the same. Just don't use the pull boost, it sounds bad, but can be rewired to be a mid boost. Yes the baffle board is glued in, and the cabinets are probably not as durable as the older SF / BF amps, and they can be heavier, but all of the mid 70s on Fender amps I've owned were still in good structural condition, and some had been abused, they all sounded good. As far as wiring, look at the inside of some of the next generation Rivera era hand wired amps, spaghetti for sure, but they sound good too. Wax and plastic coated wired don't really affect the tone IME , that's a cosmetic thing and it's inside the amp.