I wouldn't be against buying them a third time, in however many years, if they complete all 10 films in 4K. I might even be upgraded myself by then. But an improvement over the DVD's would be "good enough" for now. There was The Infinity Saga box set, but I believe it was fairly limited and sold out in a short time and is listed for $1000+ on amazon and ebay. That was probably what I remember. It's been a while and I know TWOK was discussed re: the blue tint.