Looking into the Polk soundbar. While i am also looking at some others (klip, sonos) what is the difference between the 6000 and the 9000. I know the 9000 is newer but the price is attractive to the 6000. If there's not much difference, then its a no-brainer.

also should i ditch my av receiver and just put everything through the tv? we have an apple tv, blu-ray, verzion fios and a wii u. does the av serve any purpose if i can't use surround speakers?

any ideas help would be appreacited - thanks.