Should I take the ACT or SAT?

<p>Hi, my names Jason from NY and I'm new here. (HS, Soph)
I have a preference of taking the ACT because of my love for science, logic and facts. The SAT? pfft.... the Critical Reading section always gets me...
Anyways, my uncle, who is a Princeton University graduate and is a personal guidance counselor in Texas, suggests I take the SAT because of the fact that my results will be more "comparable" with those in the Eastern states. (like NY, CT, MA etc.) I take it that most Eastern US people take SAT's? Does it really matter?
Does anyone know who got accepted into an Ivy League for taking the ACT and is from one of the Eastern states?</p>