That's not an easy question to answer. 90's music aged better, as 80's music sounds like it's at least 20 years older rather than 10 or so years older.

70s also good. 80s and 90s equal

90s.

80s

Oh I couldnt possibly pick one over the other. Depends on the day.

Both are great decades of music, but maybe 90s.

Let's see, right now I like 90s and tool on 80s music, but around 2025 it'll be time for 80s to come back and tool on 90s music

Not sure, I probably like more 90's songs than 80's songs. But out of the 80's songs I do like, I don't know if I like them less than most of the 90's songs I like. Also, 80's songs have poorer audio quality than 90's songs because of the recording technology. Also I'm not sure if I like 2000's songs better than 90's songs.