I’m pretty sure this might have been in the threads before, but I might as well do it, anyway.
My personal favorites are the SNES version from SFII, Spittin’ Narcissism by Jose the Bronx Rican, and a bunch of others (including the violin cover that was posted here). I also like “Crimson” from SFA3.
(On a side note, why does his theme get calmer with every game? It’s supposed to be fast! You don’t expect mellow music when you’re dealing with a masked lunatic who wants to bleed you dry.)