Go for the Aeroad. No real downsides in terms of handling, comfort or weight, and so you may as well have the aero benefits, however incremental they might be. Plus it actually comes fitted with decent tires, not crappy Yksions.
I’ve got the Aeroad, been very happy with it. A good friend worked for Canyon for a while and got to ride both bikes regularly, he went for the Aeroad as a result.