That probably did not come out as I intended it to sound. I was trying to not discount the 60's for having lack of good bass. I think they are very good in that category. I think most people would be amazed at their performance, and most likely would need nothing better.
Yes, the 80's have better bass performance, which I assume is partially due to the larger enclosure. I would not say it is leaps and bounds better, but pretty noticable. If I never upgraded to the 80's, I would still be very satisfied with the 60's.
I did not get a chance to do a side/by/side comparison, but from memory I do notice an improved response in the low frequencies.
M80s-VP180-QS8s-EP600-2xEP350 Denon3808 Outlaw7700