I'm a big Skins fan but I'd hold off on starting Matthews for a while. First, see how Spurrier uses his qbs and how they play in the regular season for a few games. That leaves Vick and Green. Out of these two I think Green wins hands down. He is more experienced that Vick and will have more total TDs. He is much more valuble than Vick when passing TDs are 6 points. Green may throw more interceptions than you would like, but so will Vick. Green should be improved now that he has another year of experience with Vermeil, has a new weapon in Morton, a system that likes to air it out, and a now proven running game. Start Green for now, but watch the progress of your other two qbs. You have three qbs who could surprise people this year.