On my 400 I have it on top of the dash at the far right, touching the door pillar. The control box is under the drivers seat, which is where the amp. is
The remote is next to the shift lever, easy to reach
You can play music via bluetooth, sounds fine, or you can use the 3.5 jack, or the iphone connector (not very useful if you have an android phone)
I think I had it playing music of a USB stick too.
My car came with a PARROT MKi9100, which died, and I replaced it with the PARROT MKi9200, as its the same wiring loom apart from the bigger display, so easy upgrade