I vote singles as well, unless you just want the thrill of the break, which we all seek from time to time. If you're just after a break of big product, I'd personally pick Dominion, but you can't really go wrong. Every box/pack/tin/whatever is a gamble, so Cup might have the best overall breaks, for example, but you can still hit a bad one.
Personally, though, I like Panini Prime.
Personally, though, I like Panini Prime.