from what I know it's a Linux box and yes it's a full PC.
I am not to familiar with the box but I've had CW for a while, and I can tell you that the support is exceptionally good, and the price for their unit is very low compared to the units of different manufactures.
If you are in this hobby to learn and experience new things, then I am sure you'll learn how to use the 3000, It's way out of my price range outwise I would have bought one myself a while back.
But I am failry quick at learning new stuff and get used to them.
If you are second-guessing yourself another great HD unit more simpler to use is the SV8000.