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Thank you for that link.
I definitely experienced quite a taste difference when going from a plastic (non-Hario) pourover, to a porcelain one. To be fair it was a "cheap" plastic one. Porcelain one was a lot "cleaner".
Aesthetics wise the copper one is an absolute win for me.
Heat retention I'm not really sure whether that actually makes a big difference with a quick method like Hario V60 to be honest (also just doing one large mug at a time so it all goes down even quicker)..
Durability wise the copper ones dent fairly easily I've seen (almost bought a second hand one which apparently had been dropped before, had quite a dent in the rim : )
..so main consideration really is taste (and price obviously, but I'm willing to pay the high price if it really tastes nice)..
I don’t think there should be any taste difference between ceramic, metal or plastic V60s.
Aesthetics, durability and heat retention are the only differences I’m aware of. Some good stuff on the latter here: https://www.google.co.uk/amp/s/amp.reddit.com/r/Coffee/comments/2xhjgd/showdown_plastic_vs_ceramic_v60/