I used to really like these guys back when I was fifteen, until I figured out their basic trick of crescendo/decrescendo and manipulating the listener via sentimentality. Most of their songs are fairly similar, both in terms in of how they're written, and often in terms of the actual melodies they use. The layering of sounds is also pretty simple: it might be dense, but its more like a movie soundtrack, with different pitches simply bolstering the immediately recognizable main melody, rather than doing much of interest. This seems to be the major problem with most post rock bands that aren't Neurosis.
I'd much rather listen to Univers Zero or Le Orme, or maybe even Jacula, to get the whole prog rock using classical instruments thing, because those bands are a lot more adventurous when it comes to having songs going in different directions or using dissonance to build tension.