Right now I just have my AV receiver switching signals between devices in my theatre. This okay, but when switching between sources, it is rather nasty. The video flashes, and flickers and just goes crazy for a couple of seconds while the projector re-syncs back up and scales the video to the native resolution of a projector. Are there any scalers (maybe they all do this) that will seamlessly, or near seamlessly switch between sources? I have been looking at the DVDO iScan Duo or the Atlona Pro5. Does anybody have any experience with either of these. I'm open to any option so long as it is less than $1300 or so.