I have the Take 5 (first series) package with the e:XL-S8 sub and now I have a change to choose between this sub and the Sony SA-WM40. From the Energy specs their sub goes as low as 29hz and the Sony goes as low as 20hz. Both have 100w amplifiers. I can't make up my mind. Which one would you guys pick ? Does the sub need to match the speakers ? Just as info I have a Sony V333ES. Thanks for any help Jr.