The first viewing in the cinema was a mind blowing experience as I had so much information to digest. Subsequent viewings at home where I fully understood the film and picked up on all the details left me feeling a bit meh ... I think Inception was a better film
I've been holding off rewatching for that same reason / fear. Blown away in the theatre.
I've listened to the OST a number of times and it still gives me chills.