Take ACT or retake SAT?

<p>I took the SAT earlier this year and got a 2050. I'm reasonably happy with this score, I think I could do a bit better, but doubt it would be a huge improvement if I took it again. I haven't taken the ACT yet and was wondering whether or not I should. Is it really necessary? Would it be better to just take the SAT again instead, or should I do both?</p>