There is never a "right" answer, given the subjectivity of individual preference. The IIIs, however, are phenomenal speakers (though the current list price of $18K does make you scratch your head). You do have to like the Sonus Faber sound, which I find quite lush and romantic.
Is the base as tight and focused as it is on the Vs? No. But with a sufficiently powered amp (you'll likely want to go ss), these are immensely musical and enjoyable speakers. You will likely be very happy in your space with the IIIs.