A:Answer I often watch youtube and youtube tv, and older netflix movies, much of which is 720p, some better, some worse with regard to definition, and I'm very happy with the 65" A90J, it's much better than I expected and is actually great. I had an old 1080p panasonic plasma and it did a pretty good job of handling the lower resolution content, and the Sony A90J hands down is even much better. This was one of my major concerns as well and I have no regrets. I would question lower resolution content on a TV bigger than 65". I also had one of the BestBuy reps pull up youtube in the store, but their wireless bandwidth wasn't great so it was hard to test. I had 40mg down and it was good, but I did upgrade to 80mg down to make sure the content was maximized to their best resolution. In short, with a 65" or smaller you will have no regrets, but I can't answer the question on the larger sets.