Is the B&W Signature 805 less harsh than the N805?

Some people here say that the N805's are not bright or harsh at all, but I have found that they are a bit unforgiving and harsh on the uppermids-treble and cause fatigue after a while because of the hot tweeter. I have Classe amplification and bel canto dac2, so I think electronics are not that bad, and they are not known for being bright or harsh. Do you think the Sig 805's tweeter is less harsh or bright than the plain N805's tweeter? or is it just about the same? I'm able to purchase the speakers via internet only, so audition is not possible. I'd appreciate any comments. Sorry if my English is not clear enough.

Thank you very much.
Regards from Argentina.