I forgot that "HD DVD" was an actual format. I meant when DVD's started being sold in 1080p format (they originally used 720p or even 480p). Sorry about that.
yeah, that confused me, too. i was like...wutt? It's the exact same thing, only HD-DVD lost out to BD. I actually had both, briefly (HD-DVD players and content fire sale week...pretty much when those stakeholders threw in the towel).
also, when did DVD's go to 1080p? ...by that you essentially mean BD and HD-DVD, right? IIRC, DVD max resolution never went above 560 or something (in PAL; max is 480p for NTSC?). DVD never did 720P
I'm definitely not that interested in 4K. I have a cheapo 4K set, but the few times I have used any of that content, I didn't see a real difference, like what BD brought compared to DVD. I guess if I had a 200" screen or something, it would be great, but I already have great color depth and all that stuff. Hell....I way prefer my old 42" 720p plasma to this value 55" 4K that I now have. (I would have kept the plasma, but I just didn't want to move it across the country. :\)