Two packs should be enough for me. If I ever get back into Dio-Stories (which seems less and less likely every day) they're be really handy for that. I don't really display my Joes, so I can't justify building massive armies.
But yeah, the 6-pack looks to be the mother of all army-builders. I like the standard blues better than Vipers or CGs or BATS or whatever, so I'll have to make a real effort to get any if they don't make it up to Canada.
^Jon