Up until recently I've been using DVD Shrink to reduce my DVD9's to DVD5's for burning. A friend told me about DVD-RB and CCE, so I did a bit of reading. Apparently it's unanimous that CCE is the best encoder for backing up DVD media, so I decided to try it out. I used the DVD-RB tutorials, especially the ones at Afterdawn to give it a shot. All seems to have worked, but now I want to actually evaluate the results, and as silly as it sounds I can't seem to think of an easy way to do it. Basically I just want to be able to do a visual comparison of a regular DVD-Shrink backup with my DVD-RB CCE backup (and maybe between a couple CCE backups with different settings/filters). The problem seems to be that none of my normal DVD playing apps support multiple instances, so I can only have one version showing at a time. What's the best way to do some simple visual comparisons?