The operation is largely intuitive - have not so good English skills for persons can also make the menu language in German.
I can not complain about the radio reception personally. Drive a Toyota Auris and had with the original radio already not the best reception because the Pioneer is a little better. (Big city - Frankfurt am Main)
Sound It is technically superior to my factory radio to worlds and with the original boxes.
As previous speakers, it may already be written that you'll need an adapter for steering wheel remote control, which is in my case. For this I've ordered from Amazon following:
Works perfectly - plug and play without any manual rework.
Until now I have only 2 phone calls conducted with the vehicle stationary, the quality, according to a statement of my Geprächspartner, was very good. Statements about road noise I can not give unfortunately.
Reading a USB flash drive takes me about 5-10 sec. I personally find sufficient is determined dependent on the speed of the USB drive. My USB flash drive has now been four years under his belt.
Bluetooth Audio works just fine. Even further off with my steering wheel remote is no problem.
All in all a super device in my opinion.