Put your liver where your mouth is!!
I say the only way to settle this is via some serious drinking.
So all of you slab, box, carton and case advocates; pick your players. Lets get together and drink / argue our way to resolving this most important issue.
Each contestant will be required to debate the merits of his/her team's chosen term. To make it interesting all contestants will also be required to eat a selection of greasy/fatty foods before commencement.
The winning team would be judged by;
a) the most convincing argument
b) number of stubbies consumed in 7 hours per team (7 being a good drinking number)
c) rate of consumption (stubbies/hour)
NOTE: A Sudden death challenge can be called at any time after the 6th hour This would involve each team member downing a yard glass of beer inside 3 minutes.
Anyone who vomits would be instantly disqualified, although they will be eligible to be in the running for the prestigious "hard case" award, the prize of which includes more fatty food and beer.
Not to forget the much sought after wooden crate trophy, flown in 'specially from NZ. :D