I've got this in DVD, HD-DVD, and now Blu Ray. Got a hold of my blu copy from Best Buy minus $25 in rewards, paid $32 w/ tax, not bad. My personal opinion is that the HD-DVD is identical in sound with the Blu version, I couldn't tell a difference. On picture, I think the HD-DVD is slightly shaper ( I'm using a Onkyo HD-DVD player, and a Panasonic bd30, on a Samsung 56" 1080p dlp). However, this is extremely small, and I would definitely not deter anyone from buying the Blu, especially when it can be had at a good price. I think the Blu might have a slight amount of DNR, or maybe it is the players, or it could be my imagination. I've not done any screen grabs or anything scientific. I leave that for Xylon and others.