Honestly the IMO the body wood does affect the tone of the guitar a great deal. thats common knowledge among guitar makers
However, to really hear the tonal difference, you need a good valve amp. A good valve amp brings out the character of the guitar. If its a guitar cheaply made of lousy materials, the amp will amplify the quality of the guitar. If the guitar is made of good tonewoods, the amp will amplify the quality of the tonewoods.
granted, much of the tone lies in the player's fingers bla bla blah yes, but we're talking about the the woods, so leaving the player out of the equation.....
apart from the body, the material of the neck, the fretboard, also the pickups and the amp affect the tone as well. i would think that the amp has the greatest effect on your tone, followed by the pickups and the body material. The woods of the fretboard and the neck probably affect it to a minimal degree, which can be offset by equalisation on the amp.
i believe that joe satriani and john petrucci use basswod as the tonewood of choice because of the tone property of the wood itself rather than the inherent cost of the woods. Basswood has outstanding and is very balanced in the high registers.
From personal experience i find the tone of a strat and a gibson les paul to be complete opposites when played through the same amp. the strat, with ash body and rosewood fretboard is very bright compared to the mahogany bodied les paul.
also, the AA/AAAA graded maple tops of les pauls add a little brightness to the tone of the les paul, but whether its AA/ AAAA jsut determines how highly figured the flame maple is, and this i beleive will have no effect on the tone of the guitar. [/quote]