I don’t know that I’ve ever heard a lead “tone” that was great and unique, certainly never think of one as the “best.”
When someone says the best lead tone, what I really start picturing/hearing are what I think of as the best lead guitar “performances.”
So, here’s the one that always jumps out at me first… SRV 1989 Austin City Limits. He was sober, at his peak as a player, and put on a master class of lead guitar playing. The tone was killer, the playing flawless and alive, and his total command of his instrument still puts me in a spell. I don’t typically rewatch much of anything, music performances, movies, shows, etc. But I’ve watched the voodoo Chile performance from that set at least 100 times, and I learn something new every time. The whole set is killer top to bottom.
I’m not an SRV hack, never played a single of his songs live, but I still appreciate that performance as one of the best things any guitarist will ever commit to tape.
And the tone… there are things about the tones he got in that set that I still can’t figure out. And not for lack of trying. I don’t need those sounds, I’d virtually never use them. It’s still been a pet project to get them anyway. I’ve gotten kinda close a few times, but I still can’t crack the code of the whole thing.
D