I've been importing my new HD video (from the HV20) into iMovie. These are family videos that I store digitally on a hard drive (and backup). I then reuse the same HD DV tapes. Some questions: 1. Do I lose quality storing the video in a digital format? If I want to save space and convert the material to MP4, would I lose quality? Is MPEG Steamclip a decent converter? It's what I've been using because it's so much faster than quicktime and appears to use my four cores more efficiently (~350% vs. ~250%). 2. Do I lose quality importing the media into iMovie? Does iMovie recognize it at 60fps? Should I instead purchase FCP and use that instead? Would I have a higher quality video with FCP? 3. What, if anything, should I do about interlacing? Thanks!