I appear to have ended up with the KEF Reference IIs tonight. Even more balanced sound with better stereo imagery than the Naim Intros.. but. The review I link to is fairly accurate. The bass is.. just not authoratative. The sound is just not inspiring, unless you turn it up lots. So basically like the Castles, but without the redeeming presence. Pleasant though.
May well fair better on kissycat1000's more up-front system, and bass won't matter so much as she has her sub.