A
1980s and it's not even close. The level of skill that developed in the rock and metal genres building on the great musicians that came before was unprecedented. Then sadly once Grunge came about it all just started to die. The best musicians today are the ones that were created in the 80s, nobody can really compare today, even the ones that are considered "good".
Oh please. Having actually grown up during that culturally blighted decade I can tell you from personal experience how bad it's music sucked. It was the high point of bubble gum Europop (and it's pretenders on this side of the Atlantic).
And don't extole to me the virtues of guitar virtuosos. I WAS in that crowd debating whether Yngwieor Van Halen did better arrpagios in the Mixolydian scale, etc. And the fact is 95% of that crew (outside Eddie Van Halen himself and a few Ozzy/Randy Rhodes compositions) created any actual rock and roll SONGS and MELODIES that have withstood the test of time. Budding little wanna-be Yngwies like us just didn't notice at the time because it was a vastly perferable alternative to pre-electronica Madonna or f&^king Michael Jackson.
Like I said, while there were oasises of exceptions during that decade-long cultural desert, 80's music just sucked.