Just a quick post to note my success with the new R-Box:
I was able to get it working with BFGMiner easily enough, but wouldn't get more than around 85-90 GH/s, no matter how I tweaked the clock settings.
Switching to CGMiner, I am getting around 110-120GH/s at a clock of 330.
So I would have to recommend using CGMiner for the R-Box.
(BFGminer gives nice per-chip stats, though.

)