I just found out that the Diet Pepsi Slurpees are made with: Splenda, Erythritol, and Tagatose.

http://www.bayarea.com/mld/mercuryn...ood/6630963.htm

Erythritol is a Sugar Alcohol. I'm a little weary of Tagatose...But, the descriptions of its effects are similar to [the effects] a Sugar Alcohol. I guess I'll have to try the Diet Pepsi Slurpee next time I'm down somewhere where they've got a 7-11.