This is a very mainstream answer, but I'm gonna have to go with Off The Wall. I like Invincible a lot, and I think it got too much negative reactions back in the day especially, but I do have some issues with the album. Doesn't make the album bad at all, some of my favorite MJ songs are on it (Threatened and Heartbreaker 😍) but Off The Wall, on the other hand, doesn't really have any weak points in comparison. It's such a classic and I can't not love it, for that reason. I also kinda grew up with the songs through my parents, which kind of helps I guess.