Which QB to start...?

I have 2 QB spots in a high scoring Fantasy league and I'm torn between who I should start. Kyle Orton vs the Vikings, Aaron Rodgers vs the Panthers, Matt Cell vs the Steelers, or David Garrard vs the Texans. It's still early but I'm thinking Orton and Rodgers, but with the numbers Cell has been putting up he's hard to ignore. And the Texans D isn't that grand, thus arguing for Garrard. Winner of this game takes sole possession of first. Any opinions on who to start?