A lot of great speakers to choose from in that price range. The list provided by Cmalak would be a great place to start. Take your time and be sure to take into account your room size, potential placement / WAF issues, amplification requirements and music preferences. I owned the C4's for approx. 18 months, but bought them at a very reasonable used price from a fellow local audiophile... however, if I had your budget of $20 to $30K, I'd make sure I took my time and enjoyed the journey.
Speakers to compare to Dynaudio Confidence C4
I am upgrading current system and wanted to get advice on speakers to compare to Dynaudio C4. I like these speakers very much (do not have them, but have listened to them a bunch) - find them very accurrate, with deep (almost 3-d) soundstage that really brings me into the music. Definatley not a soft, round sound. I am in the $20-$30k budget area and wanted to see if anyone could suggest other speakers that I should auditon that are similar to the C4s in terms of musicality.