So I went out today and bought a pair of Dynaudio Focus 140's on a whim. I didn't mention it to my wife because I didn't even know I was going to do it. Anyway, she loves them...a lot. So much that she hasn't even asked what they cost. Talk about gettin' off the hook.
Initial impressions:
They do a much better job of filling the room with sound, even without requiring a lot of volume to do so. They sound somewhat lighter than what I'm used to with my Era D5. The mids are more open and the highs clear without being bright or harsh. But this gets into one of the things that I like about the Era in the first place. They have a tremendous bottom end and really feel heavy at times, really playing rolling bass riffs and guitar riffs very solidly. I think I may begin to miss that solidity of the D5 over time.
One thing that I've found with the D5 is that they like a lot of power to really shine, so I've been giving it to them and I've been very happy with the result. But the Dynaudio don't seem to have that same craving for power before they really start to shine. It's a substantially larger speaker and you can hear and feel that it fills the room much easier without being pushed.
The Dynaudio also do an excellent job of presenting the singers voice, clear and distinct. It's hard to describe exactly but without compromising the music or balance, the singers voice seems to stand out distinctly, particularly with tracks from Jackson Brown and America (some of what I've listened to already).
The imaging seems better than the D5, but it's the imaging that I really wanted out of the Dynaudio in the first place. That's what initially attracted me to the Dynaudio the first time I heard the Focus 220 at my dealer. I know my DIY acoustic treatment (esp. the corner traps) is probably preventing me from getting the best imaging possible, but that's an issue I'll take up with some professionals later.
Overall, my initial impressions are that I'm very pleased with this choice. I'm especially happy that my wife is happy despite my spending nearly $2k without even a mention to her.