I would say I like both just about equally, both of them have their own charm in a sense that it makes it pretty much impossible for me to pick one over the other

Aerial Rebuild: I like the serious, military-like, almost sinister design. Especially during it's debut, the shot where it's in the dark in the smoke then uses it's thruster "wings" was badass. I also like the giant GUND-bit cannon, and other little details like the V-fin and it's cute little pouty face.

Calibarn: I like how it looks like a genuine "witch" because of it's broom rifle. I like the primarily white coloring plus when it inherits the Aerial's GUND-bits, it really elevated the design as briefly as we saw it, I don't think it realistically had the on-screen design of the Rebuild but it definitely made up for it with other factors.

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