I have a friend with some Harbeth SHL5 and they do sound amazing. And the recommendation to keep them away from walls is a great idea. My friend listens to a lot of classical and I was amazed and how dynamic yet organic the Harbeth's sounded.
As for what other speaker has a nice midrange I would say B&W. I know a lot of people here do not like B&W (maybe they are too popular for "true" audiophiles to like but I had their 804s and 802ds, and while they had issues with boomy bass, and a less then extended tweeter, I really liked their midrange with the FST driver. It may be a little colored but when you just want to relax and enjoy the music, they do a great job and just producing romantic sounding vocals.
As for what other speaker has a nice midrange I would say B&W. I know a lot of people here do not like B&W (maybe they are too popular for "true" audiophiles to like but I had their 804s and 802ds, and while they had issues with boomy bass, and a less then extended tweeter, I really liked their midrange with the FST driver. It may be a little colored but when you just want to relax and enjoy the music, they do a great job and just producing romantic sounding vocals.