Wow! Such help. Too much of this attitude around here.
To answer the question, "best" is in the eye of the beholder. Everyone who does them legitimately puts a lot of work into them. I've tried them on my own and it requires a TON of dedication to do them, let alone as quickly as guys around here do.
"Best" to me will be the most accurate Michigan roster, since I'm rolling with them in a dynasty. I downloaded one early set that didn't have Denard Robinson with dreads. Robinson is one of the marquee players in the game, so that seemed like a huge oversight to me, but maybe not to others. The second set had dreads on him, but had a Michigan recruit from my area who is a burly running back looking small and slender and playing receiver in five-wide.