Dynaudio X12's Upgrade? Small Room. Any advice?

Seeking advice. I have tried all sorts of speakers in my small listening room. It is a 9' x 11' office.

Everything from Dynaudio X12's to Klipsch Cornwall's. I have KEF LS50's, Klipsch Cornwall's, Klipsch Heresy II's, Dynaudio Contour 1.1's, Triangle 202 floor standers (sound good but not the clarity of the Dynaudio and probably to big for my room) and the Dynaudio X12's. The Klipsch sound great at low volume which is what I mainly listen at but both have a too bright a glare when turned up louder. The KEF are a not as smooth to me and sound better in a bigger room. The Dynaudio Contours 1.1 sound maybe smoother than my X12's but I prefer that little brightness I get from the X12's. I have been thinking maybe the Harbeth C7ES-3 might be a major step up without losing the clarity of the Dynaudio X12's. I have a REL T-5 subwoofer than I have turned up just barely for minimal bass and to make the sound a little fuller. Equipment is Primaluna separates and a Luxman 505U Integrated and a Wyred 4 Sound Dac 2. Listen to jazz, acoustic music and some rock. Any advice or recommendations or should I just keep mu X12's?