Hi Troy,

I don't think that upgrading your M80s to the high power version is really going to give you much extra uhmph over your "regular" pair. I do think that a subwoofer upgrade would benefit your system. If you indeed have Energy ESW10s then EP500s would walk all over them. They are good subs but they are an entry level product and not nearly as linear as the EP500. If you had Energy ESW-V10s then you would be talking about a closer match to the EP500, but none of the Energy subwoofers have DSP control like the EP500.