The ACT is the standard test of the South & Midwest. The only reason I also took the SAT was that Georgia Tech didn't accept the SAT. That should have been the first clue that Atlanta only pretends to be southern. I don't think the ACT is easier and my percentile scores were about the same. The ACT did seem to have more variety and, if the SAT seemed more intimidating, maybe it was because I drove ~100 miles to take it and there were only a handful of us in the room, so each of us felt like the proctor was staring at us the whole time.