It would be interesting to give people who make claims like that a taste test. We sometimes see odd results from professional testers in blind tests: You know, Two-buck chuck and MCD's premium coffee winning huge competitions. Put some boone's farm in a decanter, and I'll bet your snootiest guest will like it, even if its "a little sweet".

I think I can tell the difference between caffeine and non-caffeine coke, but it might just be the label. Maybe I'll test myself sometime...