Joeswest, first when I auditoned b&w 802d and 800d, I personally thought they were a terrible match with Mc Monoblocks regardless of what dealers may say. I am lucky to be living in a country where you can audition a lot of the top gears in a room side by side.
What I can say is unless your mind is absolutely set on b&w's, I recommend you try to audition others around their price range. For the price, B&W's midrange falls too short(too recessed) and the bass on both are overblown, making their overall sound "artificially perfected". If you want honest music that you can enjoy through your speakers, I suggest follow fews to try that may save you money eventually down the road.
Thiel 3.7, KEF 207/2 Reference, Wilson WP8 or Sasha if you can afford the price, Revel Ultima Salon2.
Out of all, I liked Sasha the most but too pricey. For the price vs. performance, I personally felt Thiel 3.7 to be the best in the bunch (awesome soundstage, pinpoint imaging, perfected balanced sound that is true to it's music source, and unlike some previously models, it is not harsh at the top, and overall very musical that you can listen to all day without any fatigue)
Sorry to steer you away from your two models, but personally I know the pain of having to switch gears if they don't work out as intended in the actual home setting. your risk of that is much higher with b&w 802d/800ds.