I know many bands get their equipment free from endorsements and stuff, but which band gets the best tone, endorsements and free instruments or not. And consider classic bands too.
Contrary to popular belief, endorsed artists usually pay something for their gear. They just get nice discounts. Unless they are the super-super stars like Clapton, Vai, or EVH. I don't imagine they pay anything, but most pay something. I know that Mesa Boogie doesn't give any of their artists free gear. They all have to pay. Even Petrucci!
one of the guitarists plays thru a fender twin AND a vox ac30, and, well, there's too much other stuff to go over, they just have really warm sweet tone
There are a ton of bands that get a great tone for this style or that, but all around, I'd have to give my vote to the Allman Brothers. Clean to crunch to heavy overdrive, using picks, fingers, or slides, its always a gorgeous tone.