What had moved me to the step:
The installation in the Skoda Octavia proved not as easy as they had hoped, is located on the installation depth of the appliance.
If no USB device is connected, annoying beeps are emitted quasi punishment.
Since the microphone is installed for the speakerphone behind the display, fan noise and the turn signal is transmitted very loud.
The volume level between sources is not individually adjustable.
The light behind the knob (volume, etc.) is very bright.
The text in the display is at Marquee (eg longer CD tracks) unreadable.
But who does not bother who buys with the Sony a good device with many features and super nem sound.
With the Pioneer I'm quite happy. For the hands-free system is an external microphone. The fan noise of the radio does not bother much and the service I can get used to.
Congratulations to Amazon, they have taken the Sony back without hesitation.