rear fill?

what is this full total sound quality your are talking about? isnt that juss redundant?
and to answer your question..

http://www.diymobileaudio.com/forum/product-selection-comparisons/9806-rear-fill-do-you-use.html

i'm not a fan of rear fill...spend all your money on front sound stage and clean bass...once you're 100% done with that and happy and have money burning a hole in your pocket then think about how to add rear fill without ruining the amazing setup you just created

Are you just getting them for passengers or for all out sound