Recs.
Updated
The United Kingdom's exclusive Steam Machine from the company known as Scan Computers. This Steam Machine carries a lot in common with the Digital Storm Eclipse based on the design and upgradability aspects. The only thing it doesn't share is where it is shipped from because the Scan 3XS ST can only be shipped from the UK. However, if you can swallow that pill and the added international shipping costs, you'll find a very capable computer within the Scan 3XS ST Steam Machine.
Specs
Pros
Cons
Con Non unique chassis
Even though 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 make a cheaper build with that exact chassis. The only things you won't get from building it yourself is the warranty on the unit and the logo in front.