having played a fly classic for about two years now, i can attest to its sonic versatility-there are a ton of tones in that 4.5lb body!!! the first poster was pretty much right on the money with the sonic differences. i haven't a/b'd them, but i've been in a lot of these discussions with other fly owners, and the concensus seems to be that the classic is a bit of a "heavier"/darker sounding guitar than the deluxe, owing to its mahogony body. i've been incredibly happy with my classic--it is an unhealthy obsession though, it will pretty much ruin you for other guitars...lol!!! i use mine for everything from ambient/ soundtrack experimental improv. to over-the-top technical death/grindcore, and it does beautifully! the bridge pup is very similiar to the tone zones. and i believe that the neck is based on the air norton (or maybe the fred) you can get custom wound fly replacements from dimarzio, but there are only a few of their other models specs that you can get, on account of their thinner size. if you're thinking of getting one new, i'd wait to get my hands on the new fly mojo, which is all mahogony and i think standard sized (seymour duncan) pups...parkers are absolutely awesome!!!