Although if you are gunning for the maximum score (e.g. for the University of Alabama Presidential Elite Scholarship), the ACT may be a better choice for a student who does equally well on both tests. This is because the ACT is coarser score intervals, so that each ACT score has concordance with four SAT scores (e.g. 36 ACT has concordance with 1570, 1580, 1590, 1600 SAT), and because the ACT composite does not require each subsection to have the maximum score to get a maximum composite score (e.g. 35, 35, 36, 36 is averaged to 35.5 and rounded up to 36) while a maximum SAT score requires maximum scores on both subsections.