They were a discovery for me as well. I learned about them on QQ and had never heard of them before. Check out the review of SAS in the polls. When you can, have a listen to the stereo versions of The Underfall Yard and English Electric 1&2. SAS has live discreet surround performances of several of those tracks plus many more.
They make stellar music. I describe them to others as the love child of Peter Gabriel Era Genesis and Pink Floyd. I hope you can get a copy of SAS someday, and I hope Merchants of Light is just as good.
Another band like them, but a bit more Floydish that also has a lot of surround releases out is RWPL . Also a QQ discovery for me. Heard any of that yet?