B&W 803D vs N802

I own a pair N802 & N803 speakers. I hope to upgrade to the diamond 802's. I can't comment on the diamonds because I haven't heard them in my system but there is no comparison between the N802 and N803. The 802's blow the 803's out of the water. I can't imagine that it would be any different with the diamonds. I've been told that the new diamonds have a tighter base in general so it is possible (remote in my humble opion) that the diamond 803 would have more bass than a N802. But the difference in cabinet size dictates that the 802's will move more air.

my vote for 803D

My vote goes to N802.

The D is a necessary requirement - there's no going back.

Brb9, you're right. That's why I vote for 803D. I heard them and heard the N802 and to me the 803D is just more refined. That diamond tweeter is silky smooth. The bass is tighter and more resolving than the N802's. And the mids are smoother and more full sounding.
I own N803 and although I got them to sound pretty good, the 803D is in another league. So much so, that it outperforms even the N802 by a nice margin. Just my personal observation.