Overall ATC sound is too polite and
mellow.
They are that. Flattish midrange with rolled off treble and bass is not everyone's
cup of tea. Tonality/timbre is more ATC's forte - especially in small models.
Most listeners like more bass and treble emphasis. Your comment about also
disliking Dynaudio suggests that your tastes are more towards B&W ported
designs of similar size - I think they will work much better for you - more
emphasis in the presence region and better bass extension (bigger soundstage).
You probably will be happier with a small monitor that "sounds big" - look for
those kind of comments in the reviews.