I've just finished watching the first 3 episodes of original version of
The Twilight Zone on Blu-ray and the show is still amazing.
What did shock me is how good the show looks, apart from some very minor film grain in a couple of places in the episodes I've seen so far the show looks amazing especially considering it was produced in the late 50s and early 60s.
I know anthology series aren't to everyone's taste but I've always enjoyed them and based on what I have seen so far I'm very happy I bought
The Complete Twilight Zone boxset.