-The Axiom subs are also forward firing while Hsu subs are downward firing (maybe Alan can speak for Ian on his choice here?)
-the Axioms use aluminum woofers - not sure what the Hsus are
-the Hsus do have the additional features of continuously variable crossovers and (the selling point for me) a defeatable auto-on... I can turn it on and off and not have to worry about sending it enough trigger voltage
Other than that, subwoofers aren't really my forte, so I have to step back from this discussion.
Bren R.
