Jeff's absolutely right with his suggestion to use reference tracks that are "relevant to the project".
Steely Dan recordings are among the cleanest & most musical ever, and if you're working on a jazz-leaning project, it's the standard to strive for. But if the project is modern rock, you might want to go with a Foo Fighters CD...or if it's bluegrass, an Alison Krauss CD, etc.
One of the recording magazines recently showed a screenshot of the session for Fun's "Tonight We Are Young". At the bottom of all their multi-tracked instruments & vocals was a Kanye West track and a Queen track.
They must have been using the Queen song as a benchmark for the vocal sound they were trying to achieve (and did quite well at, I must say), and the West track to make sure they had the right sonic punch for today's music marketplace.