I was considering similar options to you but went with the Vapor Audio Cirrus instead. I had heard the Confidence C1 many times as a good friend owns a pair, and like them a lot but ultimately find them lacking resolution and the soundstage can be a bit 2-dimensional at times. The Vivid I think is more resolving than the Dyn, but it's downfall in my mind is that it can be a bit forward and edgy ... play the wrong track too loud on the Vivid and it can be a painful experience.
Another friend of mine here in the Seattle area recently bought a pair of the Vapor Cirrus, and it took one day of listening to know that's the speaker I wanted! He has an excellent room and gear, and the Cirrus was simply amazing. It has the richest tone of any speaker I've ever heard, just layers of harmonics that most speakers just wash over ... and it's also as resolving, fast, and transparent as anything I've heard. They're gorgeous too, and built like a tank. I just received my pair about 2 weeks ago after a bit of a wait, but haven't hardly come out of the listening room since. I'd highly recommend you send them an email, and see if they're right for you.
