For the price, this is a good mirror. But you get what you pay for. While installing them, don't overtighten them - the assembly brackets are plastic and I've seen other reviews where they break. Just use common sense. They do look good on my '12 Shadow Phantom and match the matte black of the rest of the bike well. Most black mirrors are glossy black, so I thought these were a good choice. When I brought my bike into my dealership for servicing, the tech there also said he thought they looked cool, and he didn't even realize they were plastic. The black cleans up real well with an Armor All cleaning cloth.
I have had them installed for 6 months and my only complaints are they shake a little more than the stock mirrors and the mirror quality is not that great... they fuzz up and fog up easily. But for $40, I am not going to argue. I do plan on upgrading to some other mirrors in the future - I ordered these as cheap replacements since I busted a mirror when I dropped my bike.