Graham ls5/9 vs Harbeth M30.1

A bit difficult to answer, I audition the 30.1 in a store, but bought the Graham Audio LS 5/9 unheard! 
I like the Graham’s better, hearing the Harbeths in the store was a revelation, but also too much of everything, well the midrange.
I find the Graham’s to be more balanced, they let you look into the recording, while the Harbeth project the sound more towards you, especially the midrange, which I found to be a bit too much, this is just my opinion and if you are able to hear both, you maybe will have totally different impression.
One thing for sure these 5/9s I expect to keep for the rest of my life, they are that good.

I use a solid state amp 100w powerful, but a bit lean and I also use an other solid state that has tubes in the pre amp section, about 150w it is more sweet sounding, but could have some more detail.
The plan is to get me a better amp, been looking at Accuphase, Luxman and PS Audio.

Good question, have not heard any other Harbeth speaker
but maybe the Graham sits between the two!
I felt that the Graham had deeper bass than the 30.1
But I heard the 30.1 in an unfamiliar room, and not a good room at that. 
I listen mostly near field to nullify the room as best, but can not be 100% sure if the bass would be better in my living room.
The reason I like the Graham better, is not the bass, but the difference in the midrange region.
I dont think you can go wrong with either speaker, if you like their sound signature they will provide you with many staggering listening experiences. Enjoy your music, whichever one you chose.