Pro Fully upgradable
Another Steam Machine that allows extensive flexibility in upgrades. You have mini ITX options like the power supply and motherboard, you can add two SSD storage units down the line, and you can even fit a desktop quality graphics card in this machine. Pretty impressive.
Con Non unique chassis
Even if the chassis is nice, it isn't unique. In fact, you can easily purchase the Silverstone Raven chassis on multiple outlets like Amazon and Superbliz for around $79.99 and can make a cheaper build with that exact chassis. The only things you won't get from building it yourself with that chassis is getting a warranty on the unit and the pretty sweet lightning bolt on the front.
Con No SteamOS
To some, this is a killer. Because, believe it or not, not everyone is a Windows enthusiast. Some love to use Linux for they find it easier, simpler, and they find SteamOS to be the closest OS to match that console feel they're looking for. Plus it's a cheaper alternative to Windows. Unfortunately, Digital Storm does not have that option for this particular system and that sucks to those who love Linux.