When was MJ in his prime?

I've had this question in my head for a long while, personally I believe his prime started in 1979 as that's when he released his first commercially successful (and amazing) album Off The Wall. I've seen some people say he was in his prime until he died but I think it ended either around 2001 (his last studio album, invincible) or 1995 when he released HIStory. What do you think?

I've had this question in my head for a long while, personally I believe his prime started in 1979 as that's when he released his first commercially successful (and amazing) album Off The Wall. I've seen some people say he was in his prime until he died but I think it ended either around 2001 (his last studio album, invincible) or 1995 when he released HIStory. What do you think?