A:AnswerThe wireless rear kit that would work for the HW-F450 is the SWA-8000S. The rear speaker kit reproduces rear audio channels from a 5.1 audio codec , not a repeat of the front audio channels. ^Jason
A:AnswerI am not using the sound system with the one you are asking about but I am using it with my new Sony 86" TV and the sound is pretty awesome. Hope this Helps.
A:AnswerHi Todd, I've got the same problem, really don't know which one is the best as quality, reading on the web it looks they have the same performance. In my country there's about 25 dollars of price difference between 8500 and 9000. Did you find anything more about them?