I've noticed that Sweet 'N' Low is saccharin and Equal is aspartame. So, no word on aspartame yet. I will try it on a day off, though. Saccharin is the one that makes me angry.
I've also lately tried corn syrup, and it puts me to sleep. I've heard that other people who are allergic to corn actually have ADHD-ish symptoms for a while, but it does the opposite for me.
Finally, I've noticed that Splenda has something on written on the package that Sweet 'N' Low doesn't have -- "Suitable for people with diabetes." I found that interesting, as I've had hypoglycemic symptoms, even though my blood sugar is technically normal.