My preference for QT stems mainly from its being the lowest common denominator so it stands the best chance of success when sending. I don't do much w/computer video other than send the occasional file from my digital camera or burn a VCD from vacation videos. I just hate when a quick 'I'll send you the clip' turns into 4-6 emails and a phone call. Hence QT for me. I agree about the player (and I have the Pro version), the interface blows.

-Zeke