Accuphase and B&W always play in good harmony. Are you sure about replacing your 800D's? They're IMHO in a different league!
Stereo: Halgorythme pre and mono blocks, Burmester 061 - 931 - 948 - V3 & V6 racks, Vivid Audio G2 Giyas, Wireworld Platinum Eclipse IC and SE SC
AV: Halgorythme mono block (center) & stereo (surrounds), Marantz AV8802A, Oppo BDP-95EU, Pioneer Kuro 65", Vivid Audio C1 & V1w's, Wireworld SE & E