In one of the most detailed comparison reviews that I have ever read, MeanSquare’s Miscellany puts the OQO up against the Sony UX50. I wish we all the time put that kind of effort into a comparison review. Very well done, and worth reading even if you have no interest in buying a Sony UX or OQO.
It is worth pointing out that the reviewer mistakingly says that the OQO is a touch screen. It is not. The OQO has an active digtizer.