I've been playing the list that Ryan posted to great success. My list went -4 Burst Lightning, -1 Vanguard, and -1 Teetering Peaks for +3 Harm's Way, +1 Ranger of Eos, and +2 Ancient Ziggurat. Harm's Way is better against Jund than Burst Lightning for creature wars and such, while anything less than 4 Ranger of Eos is just wrong I think. The card almost allows you to minicombo a lot of the time in the midgame. Ancient Ziggurat really helps get the mana you need down and you're only running 10-12 other spells anyway and they all cost one. Teetering Peeks with Kor Skyfisher is ridiculous as well.
Overall, the deck has at least a 50/50 matchup with Jund, possibly better with Harm's Way and is much faster than the other aggro decks in the format. It's too fast for the control decks that are currently trying to take shape and comes back from a Day of Judgment better than any deck I've ever seen because Ranger of Eos is just awesome like that.