As i wrote earlier i am not interested in watching movies. You are correct about the bandwidth issue with high resulition video. I agree that 1080p is enough for movies, but i use my pc for other things. Video streaming will get better by time.

As for dvd-audio and sacd:
The main benefit from going from cd quality is the mastering quality. I was able to hear differense between 24 bit 48 khz and 24 bit 44.1 khz in blind test but i hear up to about 48khz so it's not really suprising. I have read some info about sacd and the conclusion is that cd is technically superior sacd (and vinyl as well) the reason 90%+ of all cd:s sound crap is becuase of loudness war. The only reason for sony starded with sacd was to prevent poeple to copy it illegaly.