I have the M3s for the last 2 years and they are the best I have heard to date. Though I haven't heard the Monitor Audio, I have compared the M3s (not side by side) to Jamo, JBL, Yamaha, B&W and Bose (ahem)..The M3s stand tall and clear above all these in terms of sound. My friends and acquaintances just cannot believe the sound put out by them. Anybody who has heard them has had to appreciate the quality of music.
The bass extension (or pseudo extension) is very good. For music, these speakers really sing. They are brutally revealing and have caused me to look after my sources and maintain them better.
