I purchase MCE FlyByWire A320 only. Features almost meet my expectation. I only use A320 FlyByWire in MSFS.
For ATC Communication (Native ATC), almost command was executed well. However, I have meet some Ground services command that is not executed, I don't know whether I am using wrong command or not. (I don't active required exact call-sign options in ATC Menu of MCE)
My command is as following: (I push PTT button, then say)
Pushback: Ground, American twenty three one one, request pushback/ Ground, American twenty three one one, request pushback and start.
Fuel supply: Ground, American twenty three one one, could you send a fuel truck.
Fuel supply: Ground, American twenty three one one, could you send a power unit.
I can see MCE display red text "Ground, American 2 3 1 1, request pushback and start" after my command. But there's no pushback feedback from Native ATC and no pushback select action in ATC Menu.
Then I temporarily use MCE Voice control (not PTT ATC command), "ATC one" to select Pushback, "ATC two" to select Fuel truck, ... but it's not real feeling because just Voice control help select ATC command in ATC list of MSFS and I must maintain ATC Window open to know what I am going to select by voice control.