High efficiency speakers to replace Apogee Divas

Necessity is fostering the "upgrade" bug. I currently use Apogee Divas and love them, but alas they are large. The space I have now classifies as "adequate," but I see that changing in the next few years.

A second factor driving the "upgrade" is that my wallet shrinks too fast and/or quality is sacrificed when I have to buy two of everything (how can you NOT biamp Divas?!). My thoughts have been drifting down the road of a full range high efficiency speaker with at least a hint of the massive sound, speed and detail of the Divas. I would love to be able to power them with about 30 watts - something like an DIY Aleph for F5 (which is on the to-do list!). So I'm guessing something like 91+db efficiency should do?

I found and fell in love with ribbons fairly early in my audiophile journey and haven't strayed much. If I could cough up the $31k for the new Apogee 95 db/w or even $15k for the Salk Pharos I would. My budget will most likey be what ever I can sell/trade the Divas for.
As I have said, I have a few years to research, but would like a insight on where to begin. Maybe you "upgraded" from Apogees and have some insight?

Thank you in advance.