B&W 802 Diamond or 800 Nautilus

I am looking to upgrade from my 802 Nautilus and will buy either of the above speakers on the used market. I have heard that the 800N is lean whereas the 802D is fuller....etc....I do not want to go to he 800N if it has a leaner balance on the low end than the 802 I own.
I am using Levinson 436 monoblocks to drive them so PLENTY of current.
15x21 room and some treatment. Has anyone owned both? Pleaswe help me out!!
Thanks,
Bill