POST-ROCK FOR YOU
I'm just gonna name 5 albums you should check out. Generally going for brighter stuff, less dragged out, because that'd probably bore you <.<
Sigur Ros - Takk
Mono - Hymn To The Immortal Wind
Godspeed You! Black Emperor - Lift Your Skinny Fists Like Antennas To Heaven
Explosions in the Sky - The Earth Is Not A Cold Dead Place
Mogwai - Happy Songs for Happy People
I don't even have that big of a post-rock library yet but what have you here are some great albums.
Also, random dump of albums you should also be interested in:
Anathema - Judgement (Fairly straightforward prog rock/metal)
Ayreon - The Human Equation (The best rock opera, ever. Can't pin a single genre on it, though)
Bodies Of Water - A Certain Feeling (Modern rock with obvious 70's prog influence)
Caligula's Horse - Moments From Ephemeral City (Prog Metal) (Pay What You Want
HERE, you can get it free so check it out for sure)
Coheed & Cambria - In Keeping Secrets of Silent Earth 3 (Rock with some prog influence; it's a LOVE or HATE band so be sure to check out a few songs beforehand)
Devin Townsend - Ghost (Light prog rock)
Dream Theater - Awake (Prog Metal)
Fates Warning - A Pleasant Shade of Gray (Prog Metal)
Haken - Aquarius (Prog Metal)
Kamelot - The Black Halo (Power Metal)
Mastodon - Crack The Skye (Prog Metal)
Oceansize - Frames (Prog Rock) (I highly highly recommend this album, it's one of my top 3 albums of all time)
Opeth - Damnation (Light rock, because you'd hate their other stuff)
Pain of Salvation - Remedy Lane (Prog rock/metal)
Porcupine Tree - In Absentia (Prog rock with slight metal influences)
Radiohead - OK Computer (Mostly straightforward rock)
Riverside - Anno Domini High Definition (Prog Metal)
The Mars Volta - De-Loused in the Comatorium (Prog Rock with a LOT of energy)
Thrice - Beggars (Straightforward rock)
Tool - Lateralus (Prog Metal)
Transatlantic - The Whirlwind (Prog Rock)
GUESS WHAT I LISTEN TO A LOT :V