What is the Best Sounding Stand Mount Speaker in the world?

Sonus Faber Extrema. I have owned the Sonus Faber Electa Amators (originals) for thirty years, without regret. If I had it to do over, I would have sprung for the Extremas.

Gamut RS3i.  A superb standmount.

Yamaha Ns 5000

@yowser 

Reference 3A’s are magnificent. I have the Royal Virtuoso with the Corian cabinets and Beryllium tweeter. 

It is a stretch to call the Yamaha NS5000 a standmount. It is an incredible sounding speaker. My second choice behind the KEF Blade 2. The Yamaha NS300 (not heard) is a standmount and suitable for a smaller room.

I was all set to buy the NS3000 from a dealer in Canada, but my old KEF LS50 got damaged so I replaced it with the new KEF LS50 Meta standmount + KC62 sub. After that, I realized I do not need to spend $9K on the NS3000. The KEF LS50 Meta is great.

The TAD ME-1 is also a great standmount. I saw a used one pop up last week on A'gon. You need some warmer electronics for it though. There is likely more detail on the TAD than my KEF LS50 Meta but that is going on different listening sessions.