Great working with MDigitalPixels. I was a little uncomfortable at first, because I didn't have a name to associate with a designer. In fact, it is a graphics service rather than a designer, so there is no telling who will be working on your project.
However, the results speak for themselves and in the end, I chose their logo.
Another thing to note is that of all the designers, they were the only one to attempt an art-deco design, which was one of my specifications. I didn't choose any of the art deco versions, but they were good, and it shows the versatility of their team.