SAT or ACT scores to send?!

Here is a tough question:
Send SAT scores
December 670m 570cr 610wr (1850)
March 800m 550cr 700wr (2050)

Superscore (2070)

Send ACT scores
34m 32r 29sc 28eng

Composite 31

Which would be a stronger score to send?

According to the ACT SAT conversion, a 31 on the act is the equivalent of a 2040 on the SAT. You have scored higher than that on one SAT test without superscoring it. Therefore, send in the SAT scores since they express a higher level of achievement.

But what about the low reading?

OP: FYI, some schools require that ALL SAT and/or ACT results be submitted (most probably do not), however, you need to check your specific universities’ policies.