N805's vs N802's

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.

Everyone has given some great advice to keep in mind and I will add to that of a 100WPC of class A power would probably be a minimum to consider. I was just using my Krell 300i as a substitute while my 300S was @ Krell for service. While the 300i (150 wpc) plays them decently and never cut out or sacrificed good sound, the 300S will light them up. I was thinking of moving up to a 600 or 700 Krell amps but after hearing the small integrated, the 300S is really perfect for 100+db playback. Consider your listenening habits and material being played at realistic levels.