Which scores are better for me to send to colleges?

Should I send my 25/36 ACT or my 1710/2400 SAT?

A 25 ACT is equivalent to a 1150 CR+M SAT. So your ACT is better if your English/Writing score is 25 or higher, otherwise your SAT is better.

SAT score ACT score English 25; Math 24; Reading 25; Science 25; Writing 28
Reading

590
Math
550
Writing
570

@goldenbear2020

ACT score English 25; Math 24; Reading 25; Science 25; Writing 28

SAT Reading 590 Math 550 Writing 570

25 ACT = 1150 CR+M SAT (higher than your 1140 CR+M SAT)
28 ACT Writing = 630 SAT Writing (higher than your 570)

Definitely send the ACT!

http://research.collegeboard.org/sites/default/files/publications/2012/7/researchnote-2009-40-act-sat-concordance-tables.pdf