Sephora LashStash Mascara Deluxe Sampler is a pretty awesome way to try out a bunch of them. They're minis, like half the size of regular tubes. That's another reason why it's so great - less chance of dry out, great for travel, don't like one - try another. The whole set is only $39, so it's kind of a steal of a deal, considering many full-size mascaras are over $20. I also think it's a perfect gift idea (I've even "gifted" myself two of the sets).
Stay tuned for my update on the