No affiliation, I have a Vector 1 Mirror (second mirror down on that page).

Since weight is a concern here, that mirror only weighs 1 oz., and is real glass wrapped in a permanent acrylic case. The other glass mirror on that page, same size, weighs 2 oz. There's also a "featherweight" mirror on that page that weighs 1/3 oz., but I have not handled it.

Maybe rafowell or somebody else can speak about the performance of that Vector 1 versus other mirrors. I'd like to know myself.