We have a MkIII with the factory fitted option. Quality and sound are excellent for a factory unit. As regards the 3rd row, my children report that it is viewable and watchable, however the smaller the child the more restricted the view our 11 year old and 8 year old see fine,the younger ones (6 and 4) struggle when the head rests are up on the middle row. Be advised though as standard they only come with 2 headsets and they are