lol... I only have five sets, one purchased by itself new, one from each of the bundles (DK1, DK2 and DK:JB) and one that was used, free from EB Games in some promo they were running at the time.
Does this mean you're worse off than me?
I suppose, really, I need nine sets. Four for DK, four for DK2 and one for DK:JB. I could have groups of people over to play them all at the same time.
Wait, I've got two copies of DK:JB. So I need ten.
I wonder if I can find one of these awesome eBay lots.