The British speaker sound: Tannoy, Harbeth, etc...

Hi, I have a pair of Tannoy D500s that I purchased as demos some time ago. I'm going to have them looked at because i think one of the tweeters may be blown or loose. But more to the point, I love the sound of them and I've been doing some reading about the British monitor sound. I also have a pair of Spendor S3/5s in my home office. They sound different, but I really enjoy them too. I've been reading about Harbeth's too. I've also studied the Tannoy prestige line. I don't have access to listening to the Harbeths or Tannoy Prestige line for listening. While my D500s are in the shop I may demo some other British monitor sounding speakers at home. I've heard other speaker lines at audio shops, but I still keep coming back to the British sound. It's not so hi-fi, just very natural sounding. I guess I would surmise that I love good midrange. I don't like bright speakers.

What are your impressions of the various British speaker lines similar to the Tannoy sound? How would you characterize them and what recommendations would you have? I like the Tannoys partly because they are good at low volume and because they sound decent off-axis, both important to me. They have to live in my living room where can I appreciate them too (aesthetics).

If it helps, my associated equipment is Mcintosh tube amp and preamp. EMC-1 and Sony SACD CD players. Audience Au24 interconects and speaker cables. I like bluegrass, classical, jazz, ambient/meditative electronica, some rock. My favorite instruments are acoustic guitar, cello and piano.

I appreciate any and all opinions, recommednations and discussion!