Interesting. When I initially drew it up as three deep, I had Helu as the #3 back before switching him out for Ozigbo, who I liked better. Helu was the fastest out of the bunch, and had a monster game against Mizzou in 2010. But I never liked him much as an every down back. Maybe I just remember the anemic 2009 offense too much and how stagnant the run game was.
I disagree with Helu over Abdullah though. Ameer has the yards on him and he really carried the 2014 team on his back in a lot of games. Aside from the 2010 Mizzou game, I can't remember Helu ever doing that.