It depends on the team. But overall, it should be Oden. But Durant is making a very strong argument for himself. But look at the recent Finals winners:

Lakers: Shaq
Spurs: Duncan
Pistons: Wallace & Wallace
Heat: Shaq
Rockets: Olajuwon
Bulls: Jordan....just kidding.

But you see my argument; most of the champs have a presence in the middle. Even if he (Ben Wallace) is not always an offensvie force, and even if he has a lot of help, or better player (Kobe, Wade)...except for Jordan, the past 15 or so champs have had a dominant big man. And especially if the #1 pick is the Celtics...Oden would work much better with guys like Pierce and Gerald Green than Durant would. And Durant still needs to add some muscle.