Philb7777, I'd discourage you from larger speakers. I think the Eidelon Diamonds are a very nice fit with your room. I also think you probably have more to do to optimize you existing listening experience.
Power and cabling is so important for a system such as this, you will be very shocked if you go deeper into it.
For example, the diamond tweeter is a true masterpiece. I have never heard an upper end with such a high, clear, undistorted, and seemless presentation. It has spoiled me when I listen to other speakers, as has many other attributes of Avalon speakers. Most cables are designed to roll-off the top end because people find their speakers have excess tweeter distortion, accentuation, and grain. But, the diamond tweeter has a purity and energy that will be intoxicating once you hit upon the correct combination which permits it to shine. Violin will grab you by the heart, and piano will shimmer with a ravishing beauty and energy. The tweeter provides such a delicate and nuanced presentation, coupled with an overall sense of clarity and that 'notes-floating-from-the-speakers-to-linger-in-the-air' thing.
