To the extent that it is a matter of trust, understand that the so-called macroblocking problem wasn't a Denon problem, per se. It was a Faroudja problem, and afflicted any DVD player using the Faroudja FLI23XX chip. The 5910 is using a completely different chip that does not have those macroblocking problems, so that shouldn't be a concern. An SDI mod and Iscan would also allow you to avoid macroblocking. I'm not sure which one would cost you more, but at least with the iScan you would also be able to deinterlace/sclae your other sources.