enak,
How do you like the new album? I have yet to hear it, though I enjoyed APC's debut. I am a huge Tool fan, however and I own all their stuff. Here are cans that are great for rock:
Audio Technica ATH-A1000 (used to own, moved up to W1000 and then W2002)
Grado SR-225 (my favorite rock cans)
Grado RS-1 (also good rock/jazz cans)
Sony MDR-CD3000 (great all-around cans)
Sennheiser HD600 (many will dispute this, but these cans are great for rock too; they are my favorite overall headphones)
I would recommend some cheaper options, but since you already have the great DT880 and ER-4P it seems you are beyond the MDR-V6, SR-60 and HP170. My favorite out of the above cans is the 225; its slam and dynamics are great for rock. The CD3000 is also a great can for rock, and I even like the HD600 (but since the DT880 doesn't have enough "oomph," the HD600 may not satisfy you without an amp like the Max).