I've been using Energy RC-70 speakers in my stereo system for over five years now. My pair is so old it's actually in the rare rosenut finish which has been discontinued since 2008 or so -- truly beautiful looking speakers!
But, the one constant thing I've heard over the years from the various audio dealers in my area is that I can do better. In other words, the RC-70s are holding back the true potential of my system. I am powering them with Rotel separates and an RCD-1072 CD player. The dealer which sold me my Rotel components always tell me about the Rotel/B&W synergy and it has sparked my interest in the CM9's. I wouldn't mind shelling out the expensive money for the CM9s if they are a big improvement over my Energy's. Now, they're essentially the same design configuration; a 3-way driver tower. But from what I've gathered online, the CM9 has excellent clarity and resolution.
I haven't heard the CM9, so if you have experience with this speaker (or have heard both B&W and Energy) please offer your insights/opinions on them. Thanks in advance.