I'm a little late on this one... but neck through bodies give you more sustain because the whole body and neck both resonate sound... with a bolt on neck you generally lose a certain amount of resonance in comparison to a neck through. But it's almost a fact that no two bolt ons will sound exactly the same... since it depends on 3 or 4 screws, how tight they are, if theres a rubber gasket, what type of metal it is, how long the screws are, etc... For metal and shred... I would reccomend a neck through. For bluesy, more down to earth type playing I would recommend a bolt on, namely a Strat.