The conventional wisdom is there's a Big 5: LaDainian Tomlinson, Adrian Peterson, Steven Jackson, Brian Westbrook and Joseph Addai in some order.
I'm not sure how that came about, but once the CW's established, it pulls analysts and owners in like a gravitational field, making it hard to imagine other options. I understand why people like those five backs, but I'd argue there's a Big 9, adding Frank Gore, Marshawn Lynch, Marion Barber and Randy Moss.
Gore is the only back other than Jackson who can go 300 carries/70 catches. Lynch had 280 carries in 13 games and will catch more passes this year on an improving Bills squad. He'll also draw some of the NFL's softest run defenses. And Barber plays a for a top-notch offense and sees a lot of work inside the five. If you want to bet on most rushing TDs, LT and Barber have to be the two favorites.
Moss has always been a monster when healthy and in a good system. In a 3-WR league, getting Moss at 9 is absolutely a fine way to start your draft. So don't dread the 6th pick or the 8th - I'd even say 10th or 11th is pretty good because one among Lynch, Barber, Moss or Gore will likely fall to you.
In fact, I'd take 4:3 on Gore/Barber/Lynch/Moss vs. Peterson/Addai/Westbrook/Jackson in fantasy points. (I do think Tomlinson stands out a bit).
Finally, for some comic relief - (and shameless self-promotion) - I wanted to post this clip from my fantasy football documentary again. Please feel free to send out the link.
Warning: Don't watch if you've recently suffered a traumatic loss.