as long as it's in hd, i could really careless about numbers. the most drastic change i noticed, was when i went from the crt to just a 420p hd. i have a both a 720 and 1080p, but i believe the biggest leaps have already come about. it's funny cause as i sit here and look at these pictures, the majority just seem to have upped the sharpness on them. in games you'll notice slight differences like the lighting. my boy is always talking about 4k and he's an uppity type motherfukker. he's never satisfied until he has the highest specs possible. i'm good with what i got. the "advancements" won't be worth the money you put out for them.