B&W 805S although they sound very detailed and controlled have to be the most boring, laid back speakers I have heard.
When I auditioned them, I couldn't stand them and much preferred Dynaudio Audience 52SE's, even though they sounded "all over the shop" in terms of control / focus in comparison.
From my experience of Dynaudio speakers, they will sound very neutral, time well, musical and have a really balance from top to bottom, but particularly the midrange and the bass.
I would also advice that a good quality power amp is a MUST for a speaker like this. I've auditioned the contour 1.4, with my MF A3 amp, which didn't have enough power to drive it properly. The speaker only opened by when drive at high volumes and at lower volumes sounded constrained / shut in, this is because of the amp, and not the speaker itself.
If you got the money and the amplifier and you think you can get a bargain, got for it., though I personally recommend you buy from a dealer and get an audition, as this will save expensive mistakes and save you money in the long run.