Harbeth 30.1 or 40.1

@dodgealum 

i am with you -- can lead horse to water but it may not drink lol

@big_greg 

like your report - i would only add that all but the tiniest harbeths do benefit from strong amp control of the woofer(s) - therefore hegels are so good a match as many have found

yes there is great nuance and magic to using tube amplification, but therein lies the trade... bass control is sacrificed and bass impact lessened in exchange for midrange magic ... this particularly key for 40 and hl5 - where with the wrong/weak amp the bass can bloat and slow to a crawl

Once again, thank you for all the opinions.  Even though logically I think I should wait for the M3 to come up, But gosh, I can’t get the 40.1 out of my head!  I keep coming back to read all the comments.  I read them all three times now.  One of the reason is that the M40.1 is a local sale, and I know these speakers can be rare to come up locally.  My emotion keep telling me that if I don’t buy them now, I may not have a second chance.  
The C7 and SHL5 plus suggestions come up a couple times.  I researched on them, for some reason, they don’t speak to me.  Firstly, I don’t like their look.  Then I listen to all the sound clips I can find on the internet, and none of them speaks to me like the M30.1, and M40.1.

And the M40.2 is way out of my budget.
My speaker journey now is rather short:
B&W CDM 7 NT -> Zu Omen Def -> Spatial Audio X5

I remember the B&W sounds dull no matter how much power I throw at it, it seems I like more life-like, holographic sound.  This is why I choose Spatial with OB design.  
One more question, I hope the Harbeth, even they are not efficient, they sound different from B&Ws.  Although I can’t generalized the CDM7nt as the B&W sound, but I got similar feeling after auditorium many box, not so efficient speakers at different shops.  

Just to add, I audition the B&W 802 with high Classe amp at the dealer many years ago, and I got the same feeling, full and nothing exciting.  Then I hear a big Maggie, and I got goose bumps.  The singer seems to just floating in front of me.  So ... just to give a sense of my listening taste.  Do you think the I will be happy with the M40.1?  If it is like the B&W, then I will avoid them, although they don’t seem like the case.

Sorry, a typo. I mean the B&W is dull, not full.

Another thing to consider with sound on YouTube is the room. Same speakers in different room probably sound much different. Including yours. Also who is to say how the production of the videos differ?  

In any case choosing speakers based on Sound on a YouTube video alone is very risky business IMHO.