Thanks for reminding me about Porcupine Tree. I first heard about them from a young guy who worked in the juice and smoothie cafe I used to run. He was a lovely guy, a kind of "proud to be a nerd" type who enjoyed 1970s prog rock and a genre called "math rock".
I LOVE Porcupine Tree (and Pink Floyd). I just don't listen to music enough these days. I should make more time for it in my life!