Unless they were super cheap... like rental prices... I'd wait and use the Blu-ray, hoping for a UHD release later. I don't want to support streaming "purchases."

Question for you posed as a hypothetical: If a movie you loved received a excellent 4K remaster that was only available digitally i.e iTunes, with the physical media alternative of said movie being a Blu-Ray that uses a old, dated scan - which would you choose? And lets just pretend that "waiting for the UHD" is out of the question.

I'm not sure if you're a fan of the first 3 Die Hard movies, but the above is true right now for Die Hard 1-3.

I respect you as a poster. I'm genuinely interested in your anwser.