My first experience with Scansonic was a demo of the MB6 side-by-side with the Magico S1mkII and the Kaiser Chiara. The Kaiser won but at $22K, was not an option for me. I liked the Scansonic better than the Magicos. They are very good. That being said, I do think the MB3.5Bs will be a little less refined under 60hz compared to the MB5Bs. I think you will find the MB5Bs are going to be brilliant and I think will go toe-to-toe with your Dynaudios.
That being said, comparing the Scansonics vs. the Confidence 30s would not be terribly fair. In that price range, the Raidho C2.1 is really the right point of comparison. The raidho tweeter and drivers are a clear step forward compared to Scansonic and are brilliant in terms of detail and the imaging and soundstage are just obscenely good. That being said, Raidho are my second favorite speakers behind my own line. My Blackthorn 1 with go toe-to-toe with the Confidence 20 in terms of detail and transparency but I am not making a small floorstander yet to compete with the 30.
If you have interest, we could do something like you demo the Scansonics for a few months. If you really like them and want to step up to the Raidho's, I could give you full value back for the Scansonics on trade.
If you want to discuss pricing, PM me. I am all about creative solutions.