Maybe somebody with more knowledge can chime in about the x9. My only experience with it was the x9 project from which i've only seen the rotj cap. It looks like checkerboard and rainbow city though. From what I've heard from others too is that the x9 is great for muse playback but the comb filter is not that great for normal laserdisc playback.
You actually have one to play around with though, so if it turns out to be great for capturing, then I'd be pleasantly surprised.