Wanted to add: Brian sent me some samplers of Porcupine Tree and other stuff. Amongst all that was a band called Riverside from Poland I believe. Anyway, I like dreamy guitar (Pink Floyd, etc.) and when I took a listen to the Riverside sample disc I was blown away. It's like Pink Floyd on steroids. In fact, they do a cover of a song off Wish You Were Here that to me, sounded stronger than the original, I now prefer it over the original. It's extremely good.
The sampler is not all encompassing of the band's style, just the dreamy stuff. Brian tells me they are more heavy metal in other songs. While not a fan of heavy metal myself (was for a time many many years ago), I'm still going to see what I can find from Riverside to listen to on the interwebs to get a more complete idea. In the meantime, the Riverside sampler is in my heavy rotation stack.
As to Porcupine Tree: He sent me a Sampler and the album Deadwing. Every song is a new adventure. Just an incredible band!