As an owner of a Zaon XRX, I am saddened to see the company go (December 2013 Aviation Consumer), but I’m not surprised. It is another casualty of the iPad Effect.
Pilots have stopped buying XRXs because, for considerably less money, they can buy an iPad with one of the major aviation apps, plug in an ADS-B receiver and believe they are getting the same or better results.
That may be true, but if you are out of range of ADS-B or don’t have ADS-B Out, what you give up might be fatal. I have ADS-B Out and In, TIS and the XRX, so I have some idea of the advantages and disadvantages of the various technologies.