Submitting the ACT or SAT

Just like the title says, which test’s scores should I submit 1) for Score Choice schools and 2) for all score schools:

March SAT: 1540 (750 ERW, 790 M, 8/8/8 Essay)
June SAT: 1580 (790 ERW, 790 M, 8/8/8 Essay)

April ACT: 35C (36E, 36M, 32R, 36S, 33W)
April ACT: 35C (36E, 36M, 36R, 30S, 33W)

In other words, my SAT scores show an improvement, while my ACT score stayed approximately the same, but I’ve gotten a 36 on all the sections at least once.

Thanks in advance.

The ACT’s have more weight with colleges this fall, so send those. A pair of 35’s on the established ACT is more prominent than varying scores on the “still figuring itself out” SAT.