Which of these RB's should I start?

[RCaveman86]

I have the option to play 3 running backs. Which of these RB's should I play for week 1?

1) ATL - Michael Turner (@KC)

2) MIA - Reggie Bush (@HOU)

3) NYJ - Shonn Greene (BUF)

4) WAS - Roy Helu (@NO)

5) ARI - Beanie Wells (SEA)

6) HOU - Ben Tate (MIA)

Thanks for your help guys!

[thekid]

1st 3 would be safest- the others all have big questions.