Appreciate all the responses. Shipping is something I considered, but amazingly it’s only 20 bucks so a single + addon + shipping is still slightly cheaper than the double by a whopping 5 bucks.
The option to do up to 4 bikes on the double would be nice, but with 2 cars and the SO I like the idea of the flexibility that the two singles + an addon hitch adapter could allow for 2 bikes on either car or one on each. Really a versatile product.