Balazs: Hm, I see your point here. Their structure is somewhat similar, but the atmosphere a post-rock song creates is completely different from the atmosphere of a trance song (at least the ones I've heard so far, I'm not a huge far of the genre). If I wanted to compare it to an electronic genre, the closest I can think of is trip-hop, but that's the kind of similarity only I see. :x
DukeNukemForever: That's exactly the problem with thegenres, they are so fluent and sometimes so close. Trip-Hop (playing the latest Portishead album in my mind) can also be very close to both genres. I believe the problems here is that trance is for me mostly the older stuff, as example more the older Sven Väths tracks. Maybe to get an idea,
here is an example what trance was mostly personally for me. Again, that's completely based on my memories and experiences, my own little music world ;-)
Edit: I'm sure my example (Sven Väth - The Beauty and the Beast) is not trance, it's just techno. That's ok ;-)
Haha, yeah, genres can get confusing, plus I don't think they're good for anything more, than to give you guidelines when searching for some new music.
Anyway, that song was.. definitely interesting and I do get what you're saying a little more now. But this kind of music really far from my world, because while I do enjoy some electronic music, it's mostly genres with some ambient influence, and most of the time I listen to metal/rock anyway. :x