Hi,
I also am interested in your opinion of MC275 powering electrostats. ML suggests driving CLS at 20-320w/ch, the Theos or Ethos I am thinking about are 20-400 and 20-500 respectively.
I am in love with ML electrostatic speakers and wonder if every one else is just trying to sell me on 'bigger is better' or if there is a reason I need more wattage to drive these. I listen to all kinds of music, but focus on vocal jazz and classical at moderate listening levels.
Thanks very much for your many responses here that have helped illuminate our search for the same nirvana you have reached!