N805's vs N802's

N805 are like the Silver Signature (a friend of mine has these) - awesome and
very even dispersion - great speaker. N802's are more like the regular house
B&W's sound - a small dip in the midrange (off axis) and strong bass (hump). I
am not sure if you will be happy losing some of the midrange energy that
comes with the even dispersion of the "giant killer" N805. John
Atkinson called it "astonishing measured performance" and although
he nearly always sees some positives in almost any bad speaker - he does not
often give such accolades (code for he is telling you something - he really really
does like this speaker and not just doing another ho-hum review).

A lot depends on your room size. I am using the N802, HTM1 and 3 additional ASW-800 Matrix subs on C,R,L channels, you wouldn't beleive the amount of information they add. I use 2 other subs for front and rear LFE subs but my room is 28 X 14. I crossover my subs around 40Hz on the R,L and they are excellent in 2 channel as well as surround sound. I think you will still benefit from sub and will just crossover differently for either one but the N802 will play better mid bass information IMHO.

I agree with Krell1, but would also like to add a comment about how much power your amps have, and how loudly you listen. I used to have a similar speaker config (N805s + REL Strata III). I always thought the N802s needed a lot of power and some significant volume to really open up.

Without knowing your listening habits and what comprises the rest of your system, I'd make a guess that, assuming your system sounds great to you as-is, upgrading only your speakers to N802s will disrupt the balance you enjoy. YMMV.

I would add another REL . I have just done that in my system. I would stick with the 805s if I liked them. I have an older pair which I like.