I am coming into this topic a bit late but felt that I had to post. I have a DEVA V and 5.8 as well as nine stations of wireless and two IFB 100's, obviously I am a Zaxcom proponent. For over 10 years, ALL of my Zaxcom gear has worked just as promised, virtually WITHOUT fail. I have found both the hardware and software to be rock solid and has made my life as a production sound mixer much, much easier and more productive.
In addition to it's tremendous product line, Zaxcom's support and willingness to listen to end users is without parallel. The team goes out of their way to turn around last minute repairs or purchases, they have never let me down. There is no other company that I can think of where I can call, and on most days , talk to the president or lead programmer without any hesitation, where we can discuss hardware/software changes and I feel that my suggestions are really taken very seriously.
All gear has it's pros and cons, SD and Lectro make great products and well, I have and use products from all these companies, it's just that to me, Zaxcom's leading edge products help me the most with my workload. But as much as the product line speaks for itself it's Zaxcom's continued and timely support for it's users that I find sets it apart form the rest of the field.