I have been using one since 2013. I don't think there is another TX on the market at any price that can equal it performance wise. Although I have to admit I don't know much about the other high end radios. I just draw my conclusions from reading specs. I recently sold my first two as I updated to the tray model.
The operating system has been created by a large number of programmers that are also modelers. This cannot be equaled by a couple of engineers working in a lab and probably not modelers..
The quality of the mechanics can be improved but the tray model is better. Its not up to my Multiplex though. I wish I could put the innards into the Multiplex.
The programming is far easier than Multiplex.The manual that comes with it is a joke. The manual on the internet is better but is becoming out of date..
Fortunately there is a lot of info on various forums. And the programmers are available for questions.