An interesting personal observation to that controversial study: When I drink a regular hfcs-sweetened cola, it really has no noticable affect on my hunger level, on my fullness level, nothing. On the other hand when I drink one of the can sugar varieties, it actually does sate some hunger. Further, the cane sugar varieties make me feel full after drinking one.

I am not unique in this observation... but it is still anecdotal, take it as you will.