Frankly, to me the Zeboard looks like a better deal for $400, especially for a "learning board". I have a used Zedboard that I picked up for $200. The Styx is smaller, so if you want to use it as the "core" of some bigger project, it might be just the thing. The only plus I see for the Styx is the 2G of ram.
Tom's Computer Info / [email protected]