I doubt that you will go wrong with the Harbeth. I own the smaller P3ESR and it blows away any other small monitor that I have owned. Here is a review of the M30.1. It is basically the same speaker as the M30.2!
http://www.theabsolutesound.com/articles/harbeth-monitor-301-loudspeaker/
And another!
http://www.6moons.com/audioreviews/harbeth5/1.html
http://www.theabsolutesound.com/articles/harbeth-monitor-301-loudspeaker/
And another!
http://www.6moons.com/audioreviews/harbeth5/1.html