Since I was the first one to mention in that thread that I believe Portis is, without question, a Top 5 RB in the NFL in terms of pure talent here's my list:
1. LT: I worry about the durability issues (he's been banged up now each of the past two seasons) but in terms of pure talent there isn't anyone in the league I would take ahead of him. There is nothing he cannot do on a football field -- even throw the ball.
2. Edgerrin James: I still wonder just how good Edge could have been if he had never suffered that knee injury because as good as he is now, he's not quite as good as he was then. But he's still immensely gifted and excels in all aspects of being a RB, including the pivotal aspect of blocking where he may be the best in the league now that Marshall Faulk is nearing the end of the line.
3. Clinton Portis: I think his talent is off-the-charts. He has now proven he can excel in two vastly different offensive systems. He's tougher than given credit for being and he has home-run ability every time he gets his hands on the ball.
4. Tiki Barber: The only thing keeping Barber down a bit on my list is he's older than the RBs listed above him. But he's an absolutely sensational RB who can also do everything on the football field. If he'd only get a head coach who truly appreciated his vastly under-rated short-yardage skill maybe Barber could make a run at the single season TD record.
5. Shaun Alexander: So what if he's the product of a great system? He's putting up huge numbers year in and year out. He's absolute money near the goal line and I don't care who else is on the field, if you have a RB with a nose for the goal line that's a HUGE asset to your football team. He's also proven to be a good receiver out of the backfield and he's running with more authority and purpose than he did earlier in his career. He's a legitimately great RB and well deserving of the MVP award this season.
That's my list.