Personal experience with string-throughs (though not Fender) has been tone with more body (pun halfway intended) and more sustain.
To me, it's the same concept as an aftermarket bridge (on non-string-thru designs) such as Badass or Babicz or even Fender's HighMass; more material on each end of the strings=more sustain and ballz.
At the other end of the (string) scale, there's a couple of companies that use metal flourishes on the end of the headstock, and I think it's Fender that has a clip-on aftermarket headstock piece to add mass (and sustain), though I'd have to expend the enormously exhausting task of checking Google or Ebay for the name of the piece.
I'm a bit disappointed the Mayans weren't correct after all...
Last edited by Josh Thatguy : 01-09-2013 at 08:32 PM.