I installed the MGL V16 with a Vega control head in my RV-4. So far I am highly satisfied. My criteria for replacing the failed radio in my airplane were (1) 10-watt transmit, and (2) ability to monitor the standby frequency (as I have room for only one radio in the small RV-4 panel). The V16 meets these criteria (MGL calls the monitor function scanning.) The radio is very small and light. I removed 3.5 lbs of old radio and wiring, and the V16 and Vega with wiring came to just over 1 lb. Installation was mostly straightforward, although I thought the manual was not clear that the included 120-ohm resistor is necessary for the CAN bus to operate. Performance of the radio has been highly satisfactory. With the Vega control head the comm radio frequencies can be entered from my GRT Sport EX EFIS via RS232, or from my cell phone by its Bluetooth connection to the GRT Sport EX. Channel lists can be cycled and flip-flopped from remote buttons which I have mounted on my throttle, while a third button mounted on my stick is programmed to activate the say again feature on the V16 to replay any of the last several received transmissions. All functions work as expected. During testing I listened to ATIS and had conversations with aircraft in the pattern 99 miles away. All were loud and clear. The Vega control head can show average transmit power and VSWR (a measure of antenna matching.) On 122.8 I was showing 12 watts and VSWR of 1.1 both very satisfactory. The MGL manual specifies RG-58 antenna cable, but I was able to use the supplied crimp-type coax connector with my existing RG-400 antenna cable with no problem. The display on the Vega control head is bright and readable in daylight conditions and dims automatically or manually for low-light conditions (not yet tested.) I am very pleased with the MGL V16 and Vega control.