"I much prefer the taste of fiet Coke to that of regular Coke."
Boy I wish I did. It's that immediate aftertaste I can't stand. It's actually sweeter to me then the regular Coke. If I could find a cola without that aftertaste I'd drink it, but since I don't drink that much anyway I'll just continue to take mine straight.
Re: immediate aftertaste.
If you can find it in your are try DietRite Cola. It uses Splenda and, at least for me, doesn't have that aspertame aftertaste.
Re: C2 it has more carbs and calories than diet coke (go figure). I don't recall the exact number but it's half the carbs and half the calories of regular coke. Don't ask me....