Orion and Direct are both pretty terrible, costwise. So Direct is a little better. In *theory*. But there are little incentives for the government to be efficient when they build these things.
What congress should consider is Space X. Space X is fully private and is so much more efficient than NASA its crazy. And right now if we don't change anything we will use Russian Soyaz rockets to bring our people to the ISS, wasting taxpayers dollars in a foreign country.
Even though Space X is 1 for 4, they already won the re-supply contract (pending some litigation) and their capsule is designed to carry people to space. We should cancel government funded efforts and instead contract it all out.