It is entirely possible that Axioms would fit the bill, but you'll never know until you: a) find someone nearby that can demo them for you, or b) make a leap of faith and buy the M60s for the in-home 30 day trial period.
BTW, if you have the bucks for an EP500 (which is by all accounts an awesome sub), most folks will suggest you also pop for the VP150 over the VP100.
Good luck.