[bylo]

It seems to me the decision between an international SIM and individual country SIMs depends on things like how long you stay in each country and how much data you'll need.

For instance in Austria you can get a SIM and 1GB data for €10 (~CA$13) that lasts up to a year. With an international SIM €10 won't go anywhere near that far.

OTOH you'll need to get 5 separate cards which is a hassle, both to research and to buy.