Accuphase and B&W always play in good harmony. Are you sure about replacing your 800D's? They're IMHO in a different league!
AV: Pioneer SC-LX81, Kuro PDP-608XD, Oppo BDP-95EU, Vivid Audio C1 and V1w's, B&W PV1
Stereo: Wadia 170iTransport, Burmester 082, 061, 948, V3 rack; Vivid Audio Giya G2; Cabling: Wireworld & Burmester