Dauer is part of Fusa Corp and are fairly new to fixture manufacturing. To be honest, I believe that they are comparable in quality but Unique has been around for a very long time. Unique was acquired by Toro a couple of years ago so I don't know what changes may have come about since that purchase since I don't use their products. I have used some of the Dauer products and have had no issues yet.
I hope this helps. I do recommend that you look to an AOLP member for installation however because you can install the best products in the world but they're only as good as the installation.