The 801Ds are the ultimate beast of B&W. I havent heard properly the new series but i bet the new 800Di couldnt be pair especially when we are talking about naturality and bass. The 801 speakers are far the most natural sounding B&W ever produced, not just 801D their predecessors also. If you have the oportunity to pick the 801D over 802D go ahead. But the only problem is your room, you have just a bit more than 20sqm which is unnaceptable for them, and you will face many bass problems. I own them and I am building an exclusive 40sqm room for them. DonĀ“t forget the amps, they will sound brilliant with a big Krell like the EVO 600 monoblocks (wich I already own).
Good luck
PS: THe 802D are just ok for your space.
Good luck
PS: THe 802D are just ok for your space.