Should I take the SATs or ACTs?

<p>I already have prepped for the SATs and taken it two times. I have taken many practice tests and, currently, my scores are around 2000. +/- 10 pts (generally 700 Cr 690 math 610 writing) I got a 520 on my math, 650 on my cr, and 490 on my writing on my first practice test so I improved quite a bit. I just took my first ACT today and got 25 English, 30 Math, 34 Reading, and 26 Science.(29 composite) I figure since I took it without preparation I could improve a good deal on the ACTs as well? Is over 32 a possibility? My first ACT score is much better than my first SAT score so I am kind of leaning towards the ACTs. But I don't know if my SAT prep might have actually had an impact on my ACT score..</p>