It depends on how it was recorded. I usually do like demos a lot more than modern professional studio recordings. The reason why is because I can usually tell when they take shortcuts in the studio. In my opinion if the mix is telling a story that sounds beyond the capabilities of the artist it's a deception to the listener. This holds true more to the vocalist than anything else because if you can make a shitty vocalist sound beautiful in a recording it is a shame to the fan who goes to see them perform live.
I play everything but I was a drummer first. Some people might debate me on this but I don't like the amount of trickery that goes into producing a professional rock or heavy metal drum recording. I just want to dial it back 20 or 30 years to when bands miced up the full kit properly and that was enough for an album. Thats what takes a lot of balls, hard work, and sweat. Nowadays they really take shortcuts in the studio and I notice it as a drummer. To somebody who doesn't play drums they might not care but it bothers me when a drum trigger consistently gives the same sound. If the drummer is good enough to throw down in the studio every hit will have an equal amount of power. The trigger doesn't need to save him. And it's not like it is a save anyways because the drums sound too fake and digital. If it is too good to be true it probably is right?
Also for any instrument being played there shouldn't be tricks you can use to fix a mistake. Lay it down like the guys who gave us the classics. They did it right or they didn't use it until it was done perfectly. I heard Randy Rhoads actually doubled his solos in the studio to track guitar. Can you imagine Randy Rhoads doing two separate takes of a solo? That is pure skill right there man.