Haha, I know, but quite a few have used them now and said they are pretty good.
A couple of people on facebook have said they have been more impressed with them than the PCCM+ they fitted originally, less flaky.
The Porsche one is just a Chinese Android unit, and using pretty old hardware, not even wireless Carplay.
My main concern with them would be the screen dimming, aftermarket, including units from manufacturers like Sony and Pioneer, don't tend to have an ambient light sensor on them, they just have a two settings for screen brightness, for when the headlights are on or off. The screen dimming or brightening when the cabin is darker or lighter is such a nice feature you don't notice until it is gone.