Of the three, the Epik would have been my choice. I'll bet that you will be very happy with it, at all volume levels. You did good.
Having never owned a sub before, you are going to experience a bit of a learning curve to get the best out of it. Come on back in when you get it, and we will help you.
"Women and cats will do as they please, and men and dogs should relax and get used to the idea." -Robert A. Heinlein