BigWill, it certainly isn't sibilant on every recording (Luxury Liner by Emmylou Harris for example is magnificent) and I never said it was "inherent".

I've had friends bring their speakers over my house and heard less sibilance on the same recordings. The only different factor here is placement. Call those speakers coloured if you will, I don't care, they were great. I have new speakers on the way (monitors) and guess what, I decided to keep my M60s for now...because I like them very much. They need more smoothness however.