Sounds to me like a set of Dynaudio Contour 60 or Sonus Faber Olympica Nova III would be more up your alley.
I've had Harbeth for years and can listen happily for many hours. A new music room demands a rethink and am listening to a pair of Focal Diablo III Evo, incredible detail retrieval and soundstage, but it's possibly a bit too much. Even the best live music is tiring after about 3 hours. I'm thinking the Sonus Faber Olympica Nova III may be a happy medium and am going to enquire about them tomorrow. Plus the wife likes the look of them. I enjoyed a pair of Dynaudio Contour 1.1 for over 10 years.