In reply to:

Thanks - do any of you switch to large when listening to 2 channel music or do you keep it the same?

On my Yamaha, I choose "Direct Stereo" to listen to two-channel music out of just the M-60's (with no signal processing by the receiver), or "Straight" to listen to just the M-60's and the sub. I never change from "small" to "large," which would require drilling down through the setup menus.