I was going to buy them but they're too tall for my room and the tweeters in them are a nearly 20 y o design
LOL...those Esotar2 tweeters are amazing and some of the best in the business still, and Dynaudio continued to refine them since inception. But yeah, the C4 need a big high-current amp and a big room.
I bought a new pair of Confidence C2 Platinum last fall when they became discontinued pending the new Confidence line. I got a steep discount and they are amazing. I couldn't be happier. They replaced my older pair of Contour S3.4.