For reference, my dad has refereed Division I NCAA basketball for almost 15 years, and has been to the tournament many of those years, including the Sweet 16.
I can tell you that the SEC refs make decent money, but not the best. In fact many non-major conferences pay more to their refs than the SEC does. The good refs will go where the money is, and most refs will belong to multiple conferences. The SEC pays good, but not the best. Also, what is considered a good ref by the fans, is not necessarily a good ref by the coaches point of view. Many refs will actually try to please the coaches instead of calling the game exactly how they see it. A coach will say a ref is bad if the fouls are one-sided, even if that's the way it really was. It's not uncommon at all for referees to keep the fouls on both teams close just so neither coach gives them a bad rating. This is more based on individual refs, though, and not the crew. To a ref, two average ratings (by a coach) are better than one good and one bad.
Coaches can actually block a couple of refs each year from refereeing their team. If a ref is blocked by enough coaches that ref will get fewer games in the future.
Also, the commissioner of a league has no impact on how refs will call games... In other words, Slive has no impact of how the calls go in MSU games. That's not to say that a referee doesn't have something personal against a team or coach, but that conferences commissioner certainly won't influence them.
I voted "average" in the poll, btw.