The 1966 version, which is 205 minutes long, is better.
I don't know if I could actually go into a cinema and watch the 205 minute version all in one go.
You should starve yourself for 2-3 days and get there armed with a solid menu based on lasagna and assorted pasta, good sparkling wine and the rest. What a go that would be! You might even end up liking it and willing to try the experiment on Nostalgia.With a different menu, though.
You can do this in Italian cinemas?
Andrey Rublyov (1966) Tarkovskiy's movies are famous all over as a surefire remedy against insomnia. But this movie is probably the only exception. It starts slowly but then it grips you and the last episode ("The Bell") is very moving. 8\10
This one is boring too, but it's Tarkovsky's least boring picture. What helps is that it is chopped up into episodes, so, if you find one bit dull, just wait for the next one. And as titoli points out, the last chapter with the bell is the most interesting, so you go out on a high note (and get some final color images as well).