Thanks for the feedback! I see on the CIPA site where you can get replacement straps for $7/mirror + $6 to ship, so a new set would be $20.
CIPA Part 11951I like the Aero 2 better but at a $65 premium over the CIPA, I'm just not sure! On my first F150 I had CIPA mirrors that slipped over the truck's OEM mirrors and tightened by hand with a knob. I ended up rigging a separate strap to hold the mirror in case it came off during travel; at least it wouldn't become road trash. I need to take the plunge soon so I can be ready for the next trip out.