Well no one ever replied, but I did listen to both in the end. I auditioned the M2 for about a week in home. It sounded fine, but wasn't a clear upgrade over my Krell KSA-50s + Peachtree NovaPre. I couldn't justify the cost. I eventually auditioned the Grand Integrated and wow. Much more dramatic improvement in both resolution and bass. Really really good. Both were fed with a mac mini + bit perfect - M2 via optical (and converted to coax) and Peachtree Grand via USB.
I bought the Peachtree and love it. Now it is driving a pair of Monitor Audio PL300's and sounds just awesome.
I bought the Peachtree and love it. Now it is driving a pair of Monitor Audio PL300's and sounds just awesome.