I know 'Oceanic' is iconic and all and I know that that one and Panopticon and usually held up as the bands highpoints but.... I've been listening to all of their stuff recently in preparation for the new album and ITAOT is hands down best.
I know it is fashionable to slate it because there are sung vocals rather than screamed ones and it seems less 'intense' or even (in places, whisper it) 'post rock' in style. But I think it just has much more variety to it, the quieter passages make the louder bits all the more crushing. The melodic bits show just how tight and amazing they can be. I love it.