I've listened to all (or most, if there are some I'm unaware of) of Wilson's "projects." Porcupine Tree and Blackfield are easily my two favourites, followed by Wilson's solo stuff, The rest (Storm Corrosion, No-Man, etc.) are all kinda grouped together. On-and-off type of interest to me.
I honestly only listened to the entire Storm Corrosion album once. I'll definitely have to listen to it all again, but I remember liking it. Was back when it first came out, and I only knew about it because of my father. :p
I used to listen to Opeth a lot. Again, because of my father. Kinda got out of it though - not entirely sure why. Haven't fully listened to any of their music since... the 'Ghost Reveries' album. Goddamn, that's like a decade ago, now...
What about Anathema? Ever give them a listen?