I'm really striking out here finding a product.

I have a 2008 BMW 528xi. I'm really trying to get CarPlay added in my car. The features that are important are being able to change songs with the steering wheel and activating Siri.
I've had some folks recommend the Avin, but a local car audio place is hesitant to install saying it's junk (and the buttons for the steering wheel are confirmed not to work by the vendor)

Does anyone have a success story for a product that worked well?

Reading some of the reviews of them where AC stopped working and other quirky issues aren't very encouraging!