Matt,
Some points for you to consider:-
As a 604S2 owner I can tell you that B&Ws, in general, require lots of clean power amplification. By "clean" I mean refined, which indirectly means an amp on the expensive side rather than the cheap side. I do not know the Rotel specs & I'm sure that it has adequate power but it certainly lacks refinement in the mids & highs, which can be grainy (this I remember from my experience of hearing a few Rotel amps a few yrs ago). Lack of refinement might cause listening fatigue & could accentuate the brightness of the Nautilus tweeter. Additionally, the power amp should be capable of supplying large doses of current 'cuz the speaker has a 4th order x-over ckt which has a bad habit of changing its impedance over freq. This means a hard load for the amp to drive. Gobs of current is the solution. A side related issue is that these speakers sing (really well!) when the volume is turned up a bit. Don't know if your neighbours will complain!
I have also found that on complex orchestral pieces, the compromise made by B&W in making the 600 series cabinets MDF shows up pretty significantly - the sound is boxy/directional rather than being spatial within the soundstage.
I have also found that the larger 600 floor standing units work best when pulled out into the room i.e. very little or zero help from the walls for bass. The speakers are capable of re-producing plenty of bass when free-standing. If they get close to the wall, bass becomes boomy & that can get annoying + it hides the details of the music. I solved that problem using ASC tube traps. You will need some room treatment to get the best out of them.
I have also found that using a tube pre (like I have) tames the Nautilus tweeter to where the listening fatigue is virtually gone.
Don't know anything about the Totems, sorry!
Some points for you to consider:-
As a 604S2 owner I can tell you that B&Ws, in general, require lots of clean power amplification. By "clean" I mean refined, which indirectly means an amp on the expensive side rather than the cheap side. I do not know the Rotel specs & I'm sure that it has adequate power but it certainly lacks refinement in the mids & highs, which can be grainy (this I remember from my experience of hearing a few Rotel amps a few yrs ago). Lack of refinement might cause listening fatigue & could accentuate the brightness of the Nautilus tweeter. Additionally, the power amp should be capable of supplying large doses of current 'cuz the speaker has a 4th order x-over ckt which has a bad habit of changing its impedance over freq. This means a hard load for the amp to drive. Gobs of current is the solution. A side related issue is that these speakers sing (really well!) when the volume is turned up a bit. Don't know if your neighbours will complain!
I have also found that on complex orchestral pieces, the compromise made by B&W in making the 600 series cabinets MDF shows up pretty significantly - the sound is boxy/directional rather than being spatial within the soundstage.
I have also found that the larger 600 floor standing units work best when pulled out into the room i.e. very little or zero help from the walls for bass. The speakers are capable of re-producing plenty of bass when free-standing. If they get close to the wall, bass becomes boomy & that can get annoying + it hides the details of the music. I solved that problem using ASC tube traps. You will need some room treatment to get the best out of them.
I have also found that using a tube pre (like I have) tames the Nautilus tweeter to where the listening fatigue is virtually gone.
Don't know anything about the Totems, sorry!