This anime was a real surprise to me. I only had minimal interest in watching it, but when I did I was surprised. The first few episodes were average, but by episode 3 I was hooked. Unlike most of my experiences with similar anime's, the episodes just got better and better.
Make sure you watch at least the first three episodes and make sure you watch it on a high quality format, preferably from HIDIVE. If you do you will not be disappointed. The biggest challenge you will have is to pace what you're watching, this series is very easy to binge.
One other advantage I found was the episodes were very re-watchable. I have watched it twice since I watched it originally and enjoyed each watch. I am Atomic!!!