I've owned several PMC speakers including the TB2 monitor and have never thought of them being harsh in the high notes, just the opposite actually as I have tinnitus myself and have never like overly bright speakers.
Now my current ones (PB1i) are a little more "lively" in the upper range and I cured that my using tone controls built into the pre-amp.
Of the replacements you listed, haven't heard two of them but have Monitor Audio and altho I liked their sound, they were too bright for me at the time but that was at a hi-fi shop so I couldn't control the treble.
Personally I wouldn't have an audio system WITHOUT tone controls.