It will be San Antonio. Like the above post reads, they can play however they want. They'll speed up and run, or they'll slow down and dominate you. They are too tough physically (Duncan is by far better that Stoudamire), they are too tough mentally (Parker has experience where Nash doesn't), and they have (my best Charles Barkley voice) GINOBLIII!
Besides, they're team is very much like the Pacers. A good PG, a dominant big-man, a role-player or two, a defensive stud, and depth. They're fun to watch because they can change their game and beat you by 10 however they want.