Alright, I shouldn't have used the term "progressive metal" when I was trying to explain. I should have directly referred to DT.
Speaking of listening to a band for it's emotive side, I don't think people understand how many different bands I listen to. Sometimes I don't want emotion in my music, it's depends on the feeling you want to get. Technical stuff keeps me on my feet, and emotive stuff makes me want to sit around and do nothing... and also... I find plenty of emotion in DT's older stuff, I'll admit the last 4 albums were more wankery then needed, but their first 4 were much more detailed. (I still like the last 4 albums more...)
I'm listening to Pink Floyd right now... and what am I doing? Sitting at my computer and doing nothing else. On my way home from band practice yesterday, I was listening to DT the whole way. I hope this makes sense to anyone.