Are you looking for a sub to fill out the low frequencies while playing or are you (also) going to use it for producing the LFE's (low frequency effects) while watching movies? If it is primarily for music then the EP350 will probably suit your needs. If you want to experience the big LFE's during movies then I'd get something that goes lower and louder by HSU, SVS or Axiom's EP500. HSU and SVS sell some excellent subs that are somewhat less $ than the EP500.

Paul