Everyone has their own preferences. I am 6 mos in to the ownership of my subs. I love them. I listen mostly to music, but also some HT. My room is about 2000'3, and I have 2 subs that could each handle a 5000'3 room. Maybe its a sickness.

You are mostly HT... keep in mind the LFE channel goes down into infrasonic territory. That sub is rated at 28Hz. Of course it will have some output below that...
But if anything can offer immediate improvement to your experience, it will be the sub.