Argh, the bookshelves look so good on stands! I need more space!

On-wall with FMB sounds like the way to go (Ian had the same recommendation). The website specs list them as "Enclosure: Reflex/Vortex". Do on-walls have a reflex port on the bottom?

Axiom M5HP VP160 M3 ADA1000
Anthem MRX 720
SVS SB-3000 (dual)