Harbeth P3ESR or Monitor 30?

Thanks ryder. I am close to making a decision, and will update extensively when finished.

I run the C7s and I personally love all of the Harbeth speakers.  You cannot go wrong with any of them.  The M30  however is a reference quality monitor closely linked back to the BBC LS5/9a.  I was also a huge fan of Rogers so quite familiar with that spec.  I personally prefer the M30 as it is more appropriate for a home setting.  The M30 is quite revealing and the bass is lacking at low listening volumes.  Resolution is very good - much higher than P3 or C7 but I liked the added warmth of the C7.  Now one way to fix the slight mudiness of the C7 is through cabling - I use a full loom of Nordost Blue Heaven and Purple Flare.  

So for the OP, if you are using high powered/high end amp and like the resolution ,get the M30 (and the custom stands). Otherwise the P3 is a superb mini for listening a reasonable levels (they don't play loud). 

Also, the P3s are not suited to all kinds to music. They do excel in some, but if you push them too much all you can hear is congestion. If I were you, like others said, I would go for the 30

I was looking to buy a pair of Harbeth speakers and decided to ask the manufacturers what they thought would work in my room.  Alan Shaw himself replied.  In the end he suggested the particular speakers I was looking at wouldn't work.  He did suggest a smaller model in the range that would work though.  These guys make great speakers and are passionate about sound - they lost a sale but gave me the right advice.  I thought that was brilliant.  So perhaps send an email to Harbeth if you haven't already.  Good luck and enjoy the music! 

Please don't buy into the P3ESR fad. Over priced and there Is a multitude of better performing speakers out there and more musical. Fritz, Merlin, Dynaudio...heck The "Continuum" by Jeff Bagbydiy speaker for $350 out performs it. I have built it.......and it sounds BETTER! The PS3ESR build quality is a joke too for what you pay, after the $300 in parts. Hit me up if you are thinking of buying this and I can get you a better sounding version for $1000 less.