I have been living with 40.2 Aniversarries for several months. Check my other posts. I am driving them with Simaudio 400M mono blocks, 390 pre-amp, and CD260T in a large room.
I would not recommend ANY piece of equipment blindly. What I consider OK you might hate.
Yes, Harbeths are WARM - they do not have resolution of Focals, B&Ws, Logans, or Raidho and Wilsons - you can get away with it in the live - open, hardwood floored space BUT once you have cosy - well carpeted and furnished room, 40.2s become chocolate - syrupy with ALL music program.
Also, they are very sensitive to the material of which your space is made or - concrete, heavy basement will work much better than condo - style plywood room ( cabinet are lively and will go into resonance at different frequencies if walls are not sturdy enough or acoustically treated).
I have heard all Harbeth line in my personal space as well as in other rooms - sounds signature changes drastically from case to case.
Best advice - try to have your dealer arrange the demo in your own room with your own electronics - best way to see if you like them.