Music similar to Manual's Confluence album

Hi, I'm looking for music similar to the album Confluence by Manual. I like his other stuff, but sometimes, the shoegazy guitars and IDM beats distract from the atmosphere. I'm also thinking of stuff like "Halt Him" by Kettel, "I" by Aphex Twin, and "Opalescent" (the track, not the album) by Jon Hopkins. I want to listen to more ambient minus any percussion, but more in the vein of the above listed music than the darker stuff by, for example, Robert Rich or Steve Roach.