Musicophile: good thing about a sub is you can turn it down and make "a lot of bass" go away. i've never liked subs much myself. they always sounded/felt like too much. it seems subs have changed alot since i formed my opinions on them many years ago. todays subs can be ultra fast/tight and still have good slam. a good modern sub(s) can be blended into a system very nicely now-a-days. "good subs" aren't cheap but they really can help if yor're looking for a little more down low. the set-up software is key as is taking the time to set it up. a sub will do anything you want it to...and don't want it to. your choice.
cheers
cheers