So I've seen reviews on the FRSky X20 , X20S and the X20HD. My problem is that I can't find where to buy the X20HD. The reason I'm looking for it is because the X20HD is the only one that you can view FPV on the built-in LED screen. Does anyone know where I can find the X20HD or an alternative work around ? I'm also open to a different transmitter , but looking for a built in screen (not planning on using goggles or wanting to use a phone to view FPV)