Dynaudio Contour 30 vs Confidence C2 comparisons

I have C20 now and have no real complaint about bass or lack of bass. My biggest complaint of other speakers I've had is lack of bass. Mostly rock music for me but I can also put on Run The Jewels and just sit in amazement of the bass output. My room is of similar size to yours, 24'x20' with 9' ceilings. Haven't heard C1 but know a couple of people that face owned them and a couple of their complaints are very power hungry and higher volumes tend to cause the C1 to bottom out on bass heavy music. No problems like that with the C20. I believe Dynaudio gas mentioned this as an "upgrade" to the new Contour series. All that said my intention was to upgrade to C30 if I liked the C20 but I'm not going to do that after living with C20 for 10 months or so. They seem to provide all I need in my room. I'm fronting them with Naim 272/XPSDR/250DR. If more output is what you're looking for then C20 may be all need. 

If you're happy with C1 and gave the room then a move to C2 would be a good one I think. Even if a new line comes out the C2 is still going to sound great. Upgrading the front end is also great suggestion if the C2 slips away or not. I think you'll get even more enjoyment out of either speaker with better electronics. Good luck with whichever path you choose. 

If you're happy with the Marantz sound then I see no reason to not try a Marantz IA. There are tons of options so budget and sound preference will dictate your choice. Some options that seem to work well with Dyn are Naim, Hegel, Musical Fidelity, Belles, Octave and many more.