Best sub4k amplification and processing?

I am interested in going multichannel from a very musical and high end 2 channel system. I work in the business and just want some opinions on what is the best in this price catagory from you guys-especially those of you who have compared any of these following pieces that I have narrowed it down to. Any additional comments/recommedations are welcome only if you have done comparisons with these products in similar circumstances, please.

So, here is the list that I have compiled based on numerous factors, but mainly sound quality was used to compile this list:
1. B&K AVR507/AVR507s2 Reciever
2. NAD T762 Reciever for a cheaper solution with alomost the sound quality of the b$k-I am a dealer for both...I have compared these two.
3. The NAD seperates...I have not heard these pieces that retail for $500 more that the B&K, but have to wonder just how they would compare based on the stellar performance of the T762 reciever.
4. The ARCAM reciever-who has compared it to above? I am not an arcam dealer, so this really is not on my list but I have heard good things.
5. Any other opinions welcome with these exceptions-I am a dealer or have been for all of these manufactures and while they all make very good recievers and in some price catagories the best available this is not my cryteria-They are as follows: Any recievers from Denon, Yamaha, Pio Elite, Onkyo or anything Japanese other that Rotel.
Thanks to all for your input-let the games begin...