Looking to purchase a subwoofer narrowed it down to the stampede and strata 5. Just a few questions about these subwoofers: 1.) Does the finish of the subwoofer make a difference in terms of sound? Or is this purely for aesthetic purposes? 2.) Is the strata 5 the better of the two and is the difference worth the increase in price? I know that listening to the subs myself will clear up my questions just wanted to get other peoples comments before I go in and form my own.