Bought this on a whim too. I remembered this being on the similar bands section on a band I liked but couldn't remember who. Didn't really know what to expect. I really dig it though.
I discovered that this, as well as Bomb the Music Industry! and the Arrogant Sons of Bitches are all free on their website (quote unquote records or something). Listened to this a little. Its pretty good.
Well here's some post-hardocore (some ala letlive some not so much) you might like:
A City Safe From Sea - Throw me Through Walls
Closure in Moscow - First Temple
The Blood Brothers - Young Machetes
Emery - In Shallow Seas We Sail
Dance Gavin Dance - Happiness
Devil Sold His Soul - Blessed & Cursed
Cryonics - Hot Cross
He is Legend - It Hates you