You do not state your budget or your ideal footprint size. I use Zu Definition 2s (footprint 12x12") within 4" of the back wall in my main rig and Celestion SL700's within 12" of the back wall in my bedroom. Both like to be "farther" apart.
Audio Note speakers are designed to go in corners, but (I am told) also work well agains the back wall, but not in corners. Other British speakers (older Linns) are designed to be placed near the back wall.
Audio Note speakers are designed to go in corners, but (I am told) also work well agains the back wall, but not in corners. Other British speakers (older Linns) are designed to be placed near the back wall.