I never liked divx movies before cause of their proprietary format but it seems they are making some nice features and improvements on divx quality. The videos from the stage6 website are clear and they load real fast. Also I'm finding a lot of Ayu's videos in there and also new artist I haven't seen or heard before. They also let you download the videos for free!
Try watching this music video of Ai and trust me you will fall in love with her cute smile ^_^ (Kuroge-Wagyu-Joshio-Tanyaki-680-Yen)
I also liked this one ( Momo no Hanabira )