Please Give Opinions: Athena F2s OR Axiom Millennia M40 / M50 Ti OR Vandensteen 1B

i am looking for a set of full-range, floorstanding speakers which
will be used in my studio space.  both as a "real-world" reference for
mixes and mastering projects, and for general listening.  while my
Tannoy monitors are great for mixing and mastering many of my clients
would prefer to hear their work on "regular speakers."

after much reading i've narrowed my list to the following:

new speakers:

Athena F2
Axiom Millennia M40
Axiom Millennia M50

used:

Vandensteen 1B

please give your opinion about each and any tradeoffs / strengths /
weaknesses.

thanks very much.

jon