I’ve been advised that the best way to approach this is to do both tests to see which one you prefer and do better on. If the scores are similar, the SAT could be more attractive as it is much easier to study and improve.
I’d have to agree with aaron. The best way to start is by doing both, and then looking at whether you like a more STEM focused approach or more literature focused one. Most universities should accept either or, so really it comes down to a matter of personal preference.