So far I would say:
Ease of use--5
Not using the sound and I don't think it's a relevant qualitative factor as most people will have a system.
Picture Quality... I still need to tinker and I am sure it can get WAY better. It's my first HD set, so I am "wow'd" but I believe I have seen better PQ across a variety of source materials and input types (xbox, gaming, cable, dvd, hd-dvd).
Gave it a six on the value because it was not only cheap, I happened to time it and get it when the CDN dollar was at a 9% premium
Very happy with the purchase.
I am using the XBox 360 as a DVD, HD-DVD player as well as photos, music and network video. It's annoyingly noisy imo. Originally I was going to get a PS3 for a Blu Ray player, but I think I will stick with the XBox and Wii for gaming and get a really decent hybrid HD / BD player when they get more proliferated (and just stick with the XBox 360 HD-DVD for now).
Still experimenting with the settings, it really seems to look great for TV dramas and the like atm, but not as good as it should be for sports, nor for SD and HD DVD content.. still needs some tweaking.