Haha, I actually have both pairs of speakers in my house right now, althought the KSF 8.5's are for sale and I havent used them for about 3 years now. The Athenas are a much better speaker in my opinion. I have had both of them hooked up to a HK 3490 and the Athenas have a ton more bass, are front ported and have a nice lively sound, and play very nice at all levels.If you get them and dont like them Im sure you can easily sell them for the same price if not more. I bough the entire set used, towers, center and surrounds for $200 and sold off the center and surrounds for about $180 total very easily. I really like them for my billards room hooked up to the HK and iPod dock. Good luck, let us know how it goes if you get them.