Originally Posted by SurferRosa

Non-aeros can provide a clean look given cable length is minimal. So often, folks run way too much cable between lever and caliper.

Besides esthetics, the only issue I've seen between an "upgraded" lever (to aero) and an old caliper brake concerns the location of the cable anchor on the brake. If it is the old '70s style on the non drive-side (nds) of the front caliper, it can be difficult to run the left aero lever to that position and maintain the caliper's center over the rim. This can be remedied easily by switching the front brake to the right lever. If the front caliper cable entry is on the ds, there is no issue.