Sweet And Low And Equal Can Cause Ear Aches What Are The Differences Between Artificial Sweeteners?

What are the differences between artificial sweeteners? - sweet and low and equal can cause ear aches

I read that Sweet and Low, can cause headaches, but what happens to the same and Splenda? Is there one that is better than another? And recently I have found that Stevia is a natural sweetener with no calories. What exactly is the Stevia and artificial sweeteners are dangerous?