The Rotel Michi M8 monoblocks would be glorious and easily compete with the McIntosh. The B&W's need current to tame those big woofers. When I had a pair of 802d3s, my dealer recommended the Michi series over the Luxman M900u; he sells both brands! The Michi series is that good; however, the new Luxman M10x is in another league, albeit far above your suggested budget though.
Opinions: Martin Logan Renaissance 15a vs. Bowers & Wilkins 800D3
I have a choice between the ML Renaissance 15A used and Bowers & Wilkins 800D3 used, both are in great shape and priced near the same. I did attempt to listen to each under less than ideal conditions.
Which speaker would you pick and why?