I have the 60's and a 500 - Never having been exposed to the 80's, I can not imagine a better sound than I get. You would not be dissapointed either way - but now that I have had a good sub, I would never be without one. Even at low volumes watching regular TV the sub gives it that "full" sound.

"A fanatic is someone who can't change his mind and won't change the subject" Churchill