don't be so quick to pass up on Best.
The Lions worked on the O-Line in the off season, Stafford is now in his 2nd year, Burleson was added, and the Lions are not a RBBC team.
Best should get about 22 carries a game and he's a back that will make the most of them. He's averaging something like 6 yards a carry in the preseason, which I know is a small sample size, but he's working for those yards. He's putting moves on and making defenders miss, he was the fastest RB at the combine, and he has no problem running between the tackles.
Also, Stafford has looked to him a lot in the receiving game already so even when he isn't getting touches, he'll be getting looks.
Absolute WORST case scenerio he's going to put up RB2 worthy numbers but I wouldn't at all be surprised to see him in the top 15 RBs by the end of the season... and... it's a stretch but maybe even top 10.
As is, in your RB2 spot, he's no risk, high reward. Anyone else youre going to be able to get for him is risky... Jamaal Charles, Arian Foster, etc. I doubt anyone is going to give up AP, MJD, Cedric Benson, Ryan Matthews, etc for him. The only way you're going to trade up is by giving up Jennings or White in a package and mark my words, they'll both be top 5 WRs this year.
Trade him now and another team in your league is going to be laughing all the way to the bank when the regular season is on its way.
Your team is tight. I'd leave it alone.
Help with mine? -- http://www.fantasyfootballcafe.com/forums/viewtopic.php?f=44&t=469913