Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
I would tell you to go with the RX-V565 because Yammy is my favorite brand of AVR's hands down! I own the RX-V3900 and the upscaling is AWESOME! I also like the way the new front panels of the RX-Vx65 series receivers look.
I would second this, as I have the RX-V3800. I don't use any upscaling functionality because I don't need it (and have an external scaler), but the sound quality is absolutely excellent. I had a RX-V795 previously, which was basically the same price-point as the 565, and it also sounded great. I wouldn't have replaced it except for the RX-V3800 being compatible with Blu-ray's high end audio, and the $900.00 closeout price after the 3900 came out.
The 3900 is more akin to the 565 than the 3800 because they're both the newest generation. More robust upscaling was one of the focuses of this generation (along with TrueHD/DTS-MA across the board). Given Kyle's above kudos for the 3900, I'd do a little research to see what the differences are in the upscaling technology, given that the 565 is about half the price. There may actually be no difference in upscaling, but it's something you should look into if that's one of your short-list features.
In terms of the above Denon recommendation, they're a well-liked brand. However, I installed one for my father-in-law and it's been tons of trouble. An embarrassment actually. I chose it -- another closeout buy, and like I said, lots of people like them -- but it's been so problematic my father-in-law thinks I didn't know what I was doing.
-Pie