The SVS sits on a plate. When I opted for the SVS 20-29PCi, I didi it for the same reasons I chose Axiom for the speakers. This is where SVS (and HSU) excels - it's what they do and they do it extremely well. All three companies have world-class Custoemr Service. Comments on the forum indicate that the EP350 is a good sub. I just wanted one that was based on a focused expertise. Pick the one you like - you won't be disappointed.