Pursue the ACT or SAT?

I am trying to decide whether I should pursue the ACT or the SAT. Without any studying or anything, I got a 1720 on the SAT. Then, when I wasn't satisfied with that score, I took a 2-day princeton review master class for the SAT and the next day I got a 1910. Initially, I thought I could bring that up even more, but then I went on to try my luck with ACT and I got a 26 without any studying at all. Now I'm thinking that I may be able to bring that up more easily than the SAT. Most of the colleges I'm looking at require a 27-32 range. Any suggestions? Also, I'm interested in sports medicine, I'm pretty good at math (700 on the SAT and 32 on ACT), and I'm a black male (3.9 weighted GPA). Any college suggestions?