Should I retake the SAT or ACT or both?

<p>I have taken both tests one time and am planning on retesting in the fall. My only issue is which is more logical to retake. </p>

<p>I did not study for either, so I think that with practice I could improve my scores considerably.</p>

Composite: 30
English: 34
Math: 26
Reading: 31
Science: 28
Essay: 8</p>

Reading: 740
Math: 620
Writing: 660
Essay: 9</p>

<p>What do you think?</p>