I have a ns5000 too. Yamaha has well moved on from beryllium. All their current audiophile speakers are zylon (their non-toxic in-house developed stuff). Beryllium lovers may have to go to other "high end" names for a healthy whiff of Beryllium.

Yamaha NS-5000 in my main system presently. NS-3000 is a bit of a problem as I am in the U.S. Toxic expensive beryllium is an evil I was planning to endure. Suppose we could take a road trip up to BC. Maybe not with the tariffs. 

Sonus Faber Electa Amator III might be worth a look

https://www.sonusfaber.com/_next/image?url=https%3A%2F%2Fa.assets-sonusfaber.com%2Ff%2F259299%2F2560x2450%2F0f10a10bb5%2Fsplitbanner-dm-electa.jpg%2Fm%2F1280x1280&w=1920&q=85

I will contact my actuarial accountant and let him know of my advanced demise… 

KEF Reference 1 Meta bookshelf with OEM stands, $11K.  If you have the right amp(s) to drive them?  

@tomic601 imo, the e1tx floorstander is the sweet spot for tad w.r.t bang 4 buck. I had the original reference og from Andrew in the past for quite a while, but, sold it to finance other things. If you put some effort into incorporating subs with the e1tx and perhaps not listening at rocket explosion levels, you can make it sound like the reference model.

The TAD are lovely as are many of the speakers i have heard mentioned above by others. I do use a JL sub w them and my room volume is 5K cubic ft. Obviously system synergy can ruin / tame / optimize just about any speaker. Finally, without writing a long gushing biased by ownership review…i am impressed enough to seek out more TAD products to audition, add to my systems…including possibly replacing my reference speakers..