Crash Of Rhinos
It's a perfect blend of anthemic emo-tinged songs and progressive and, slightly mathy, post-rock. Not one bad song here... plus, two bassists makes them sound massive.
Also recommended by why ohio, This Withered Heart, Dogleg and 10 others, Polyphony, The Little Explorer, Bloody Mammals, Naive Mind, Daylight Fireworks, Disconnected Dimensions, Michael Snider, The Jesus Years, Chandelier Swing and Mishu.