I have installed the GROM VLine on my 2016 QX50 Non nav and let me tell you, it is the best money that I have invested in my car. The only bottleneck of the interference is our OEM crappy screen quality that mitigates the units full potential and that has nothing to do with GROM.
Beside that, the experience has been phenomenal. To be honest, it is better than Android Auto because this is a full on tablet experience. You can install any app you want like Youtube, Chrome, Gmail, Waze, Calende, and etc. Now that I have had the unit for more than 6 months, I sometimes wonder how I lived without one.
In regards of installation, at first, they sent me a wrong unit but once that was rectified (really good customer service), the installation was not so bad as it was mostly plug and play. The only very DIFFICULT PART was installing the overlay touch screen. That was insanely complicated as the our screen's original frame is too tight for it to be installed so when I installed it, the unit kept restarting due to that but once I contacted the GROM tech support, they advised me that I have to make sure the touch screen overlay is not be too tight.
FYI, I have tried a few different products like Wireless USB Bluetooth, Bluetooth Transmitter, ect. They all had crappy quality and delays but not the VLine. Plus, with Vline, you will not lose any of the OEM screen's functionality.
If you have some money to invest in your car, I highly recommend the Vline and I promise that you will not be disappointed.