I don't pay much attention to mock drafts. Though I do know the Huddle Report keeps those stats and Kiper is usually respectable on their lists.
I'm far more interested in accurate evaluations of players rather than where they end up going. I'll find that out through the course of the draft. Tell me who can play and who can't. You're gonna whiff a lot, everybody does, but the good ones also hit it over the fence on a regular basis too.
Mel's not the only voice I respect, but he's definitely at the top of the list. And in terms of impact on the draft itself, he's hair, head and shoulders over the various impersonators that have popped up over the years.