I do not know for sure if it matters, but I do know that 5.8 in the Inspire is used for comm to the optional secondary from the primary. My gut tells me that the TX, when used as a primary; are all essentially the same so long as they support LightBridge. Switch assignments may vary slightly, but let's face it, a DJI TX pretty much has to be a DJI TX by definition. After that, it's a matter of bells and whistles.