I think another issue here is the quality of the recording, which is why I think vinyl is going to survive. I've read many discussions about how MP3 DJing is going to root out vinyl, but seriously, I can't see it happening. Correct me if I'm wrong, but I don't think much of the techno music we play is available on MP3 and the sound quality is often questionable. After all, it is a compressed format and even though most punters probably aren't be able to tell the difference, vinyl sounds much much better.
Plus, like ZeMigl said, if you spin on three, you still have to bring records to the gig so FS is really usable only if you produce your own music, which is about the only reason I could think of for buying it...