Ozzy, you may even consider the physical placement of the subs; I use Legacy Audio XTREME HD Subs following the review at Dagogo.com, however I use them backwards. They are normally backwards firing, but I feel the sound is far superior when they are turned around and the primary driver is firing forward. I also placed them on hockey pucks to elevate the downward firing passive radiator. I discuss this in the review.
Such experimentation can have a nice improvement in store, and you may be able to get both improved definition and bass response.
Such experimentation can have a nice improvement in store, and you may be able to get both improved definition and bass response.