New Speakers under consideration - but I’m afraid

What are you looking to experience with the speaker change? What are you missing or looking for? Depending on your rooms acoustics and space you may find one brand or style better suited. Not to mention your equipment pairing. 
I have the Wilson’s in one system and Legacy Focus SE’s in another system, both about a year old and find them more dynamic and engaging than my 25+ year old is B&W 801’s. 
You may also want to consider a Sub or two depending on what you find. 

Go hit a few stores on the east coast if you can and if a store can set up various speakers you can a/b test. 
the Speaker Shop in Buffalo NY carries many brands as well as Audio Classics in Binghamton Ny who is also a great McIntosh dealer 

TAD E2.

Good speakers are Gawd-awful expensive.  Because you are bi-amping already, I recommend that instead of taking out a 2nd mortgage to buy new speakers and having to figure out who you can dump your old ones on, get yourself a miniDSP DDRC24 active crossover, with DSP EQ, along with the measurement mike they have.  The DDRC24 includes the Dirac DSP EQ system.  Measure your system in your room and then you can have Dirac create a custom EQ filter for your room.  The difference is incredible.  The whole thing will cost  you hundreds of dollars, not thousands.

I'd certainly look at Joseph Audio, Pulsar 2 Graphene for standmounts $10,000, or Perspective 2 Graphene for floorstanders $17,000. The only brand of speakers that most will agree are amazing speakers for their price point.

Sonus Faber, but I can't recommend models

Volti Luceras, horn loaded and super dynamic, on my final list for my next upgrade along with the Joseph Audio

I lived in Barbados for a year.  Consider how humidity can affect the speakers and their sound.