Tug, we use a Demco and have been very pleased with its performance. We got it with the spare and carrier. After using it for a couple of trips, we ordered their stone guard. On a recent 6400 mile trip, that guard seemed to do a great job of protecting the nose of our VW Beetle.
The one bit of advice I would share is to load your car and determine where and how you want to secure the safety chains. On our car, I needed to lay on the ground to attach them...not a great idea! A member here suggested running them through the wheels. That was the deal! Made ownership much more pleasant.
Gary