Most of us prefer the demo version only because that's what we're used to. This always happens when a song comes out and we've had the demo for a while - people like what they know.
That's not the problem I have with it. My problem is the stupid Machete overkill. It sucks any possible meaning out of the song and just cheapens it, imo. For Gaga, who supposedly has a vision for all her art, it seems weird to just slap someone else's visuals over top of it.