Toe - For Long Tomorrow
Christ on toast this stuff can be beautiful. It has everything I want in Math Rock (playful guitars that don't break your ears like Lightning Bolt/Hella tend to, jazzy drumming, lots of acoustic guitar, fun instruments like the xylophone, and PIANO) and more-- I can see where the Post Rock tag came from.
Big thanks to Phanastasio (or was it Kaimon? Can't remember now
) for mentioning this a couple pages back.