The X1 is also carbon fibre.I read carbon fibre isn’t as durable as aluminum framed. Definitely good battery to weight ratio though.
If weight is not as important as durability then an aluminum Ultra FS is a good choice, but bikes like the Juggernaut Ultra FS are big and bulky.
If weight and price are your main issues then your best choices are Apollo and X1.
You are having range anxiety about the X1.
I think that the Apollo is a better choice than the X1 plus a spare battery because I think the Apollo without a spare battery will handle better than the X1 with a spare battery, plus you get a better motor in the Apollo.
I would consider the X1 plus a spare battery only if you really need low bike weight and you will only rarely need the extra range of a spare battery.
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