The Digital version is new and one benefit is the bezel management they added. Not sure if they will add support for that with the analog version.
I bought the analog one as the digital wasn't available yet and as it turned out it may benefit me. Thx to Cleeve here, I now have the dream to run 3 projectors with the tripple head, and use 3d glasses at once. Problem is you have to use the analog outs to get that to work. Anyway, that applies to maybe 1% of TH2Go owners at best. What video card are you going to be using? It's an impotant ?