since I've been on such a Porcupine Tree, Type O Negative, etc. "kick" lately, Crack The Skye sort of just fell into place if you would. It might have been the timing of the first time I listened to it and the extreme amount of hype the album was getting at the time, but I actually listened to the album 3 times today at work.
some of the guitar work sort of reminded my of Omar's style from The Mars Volta, very sporadic, and "hey, look at what im doing!", but in a good way, of course.
Also, what have you listened to by Between the Buried and Me? I really didn't appreciate much of their older work too much, but once they did their Anatomy Of (covers album), and beyond, I started liking them a hell of a lot more.
"Heavier" Post Rock you might enjoy:
-Red Sparowes (thats how they spell it)
-Russian Circles
-If These Trees Could Talk