IMO having the same exact speaker model on all channels would be the best choice. Yet I understand that doing this is probably not practical for most setups. Mains should be good over the full range, not just for mids.
My center channel (B&W) sounds very different (much worse) than my mains, yet they are both in the DM6xx family and have similar drivers. I just removed the center channel completely and told my Yamaha that there was none, and to send the signal to the mains.
I am currently in the process of setting up the room acoustics (traps, speaker positioning, etc.) so I'm not ready for a final verdict. At this point, it sounds different, not better nor worse.
I've recently read "Get Better Sound" my Jim Smith, and it discusses this topic and other related issues very well.
My center channel (B&W) sounds very different (much worse) than my mains, yet they are both in the DM6xx family and have similar drivers. I just removed the center channel completely and told my Yamaha that there was none, and to send the signal to the mains.
I am currently in the process of setting up the room acoustics (traps, speaker positioning, etc.) so I'm not ready for a final verdict. At this point, it sounds different, not better nor worse.
I've recently read "Get Better Sound" my Jim Smith, and it discusses this topic and other related issues very well.