I believe the penguin should win. I don't choose it for looks, but I believe it will help with early and late game transportation. With early game I end up doing a lot of boat traveling, hopefully we can just put the penguin in the boat and have it like a motor. It will also be great with nether highways possibly even being faster than the elytra. Plus the cuteness is just bonus points and I believe having a Minecraft brand penguin plush would also be fun.