Probably Next Life. They have the least amount of rocker and are 100mm underfoot. Just look at the Surface website and get the info. Or go to the Surface thread and ask. I'm sure they'll give you an answer.
I've skied all three. New LIfe is by far my favorite ski I've ever used. So much fun all over the mountain, but can also fuckin stomp and charge! I ski my NL's everywhere, even the park sometimes. The One Life is real fun as well, but the symmetrical shape and width of the NL makes em more fun IMO.
Do you ever wanna, like, look at a chick and bare your teeth? You know, like a chimpanzee?