I have some old Shalabi Effect recordings that I like very much.
k-krack, you should subscribe to the podcasts from these fellows; they seem to be on your wavelength:
http://www.nowlikephotographs.com
They tend to favor a little bit more of the cleaner, tamer post-rock than is my taste, but I like some of the stuff they feature quite a bit and I think the ratio will be somewhat higher for you given your taste. I know they love Constellation stuff as much as you do.