I had a pair of 802 D3s powered by a CODA 16. Very nice pairing, but the CODA was a tad too neutral (I prefer a little more warmth). The CODA has tremendous power reserves and easily tamed the bass of the B&Ws. I didn't audition but would love to hear a Gryphon Diablo 300 through your speakers. I heard the Gryphon through a pair of Rockports and could not believe the incredible bass.
More recently, I heard the new B&W D4s with a Luxman M10X. Glorious combination!! Also, don't rule out the Rotel Michi products. My dealer recommended the brand over the Luxman M900U (he sells both!)