Rich, those small Cokes we knew as kids came in 6 oz bottles. If memory serves me, some of those bottles were labeled as 6.5 oz. In any case, by today's standards that's about a shot glass worth. I remember hating those old (even when I was a kid they were old) Coke refrigerator cases where you had to grab the bottle by the neck and yank it to one side to extract it. I was always afraid I'd break the bottle. Quite often the clerk would have to step in and help somebody because the mechanism was really unforgiving.
I think maybe I'm just not into colas enough to have the sugar vs HFCS thing be an issue for me. If I could afford it, I'd have cases of those cute little 12-oz plain, unflavored Calistogas rotating through my fridge on a regular basis. Nob Hill stores around here have been known to carry them, but they're difficult to find. Nothing seems to quench my thirst better. Except maybe an ice cold beer on a hot day.
Ralph