I want to upgrade the concert head unit before the volume control fails. The problem is I dont want somthing that doesnt look 'right'. The OEM audi unit had a wider facia than a standatd DIN, and I like the ilumination thats the correct colour / controlled with the rest of the interior. Has anyone fitted a concert II? are they any good, and do they fill the slot properly? pics would be nice. Or are there any alterantives?