I have an integra 7.1 and want to upgrade. I am looking at the Yamaha 2400 due to power requirements and multi zone control. I need 2 zones for living room listening to music or movies and on the porch when I am in the hot tub.. I mostly listen to music > 80% so really stereo sound is my greatest import. I have 6-ohm Kef reference III for the front. They are beautiful and create a tremendous sound stage but are power hungry to produce their better performance in the lower end. I would really like to hear from someone who has Kef's in front and listen to music on 'em. Simply put, I wanted advice from someone that has been here and learned some lessons, which can save me money, time and or aggravation.