greencloudz: If you're looking for a media center, I'd go with something geared more specifically towards that. I've had my 770 for a week now and I don't think it'd be the most suitable thing for portable video. While it can play a lot of formats, it's lacking in storage and horsepower. (I've noticed decent quality videos stuttering mildly(not enough that I wouldn't watch them, but if you're a videophile you'd complain)).

If that's your primary use for a handheld, I'd go with something that's got a 20-40gb HDD and support for .wmv

If you just want to casually watch videos (there is a great converter out there that will dump to 770 optimized quality, also reducing file size) then you may want to look into a 770. There's so much this thing can do, my mind's being blown daily. (I'm still cracking the crooked smile that appeared when I got the VNC viewer working in 2 mins. Imagine seeing your desktop and controlling it from the palm of your hand. Insane).