Canned soda tends to just say "High Fructose Corn Syrup and/or Sugar" so that they have the option of using sugar in some markets without having to print separate cans (for instance, ISTR that Dr Pepper is made with sugar for the El Paso area).

I've tried Diet Dr Pepper and didn't mind the taste, I just don't see the point. I drink soda because I want the calories. :) Otherwise, I just drink icewater. A LOT of icewater. I like icewater.