but I have one from Hama ready in case reception via FM should no longer be available at some point...

my installed Blaupunkt Valencia still runs (as before) via FM/AM :-)

I took the one from Blaupunkt (item number BP-20060210000) and installed it in a Golf 4. Works perfectly.

I have not installed the radio in the car and therefore connected a Midland MAG31 DAB+ magnetic base antenna. Works very well.