Good points have already been mentioned. What's really important to me is skip tracks, a truly perfect album will have none and I have yet to hear an album where there isn't at least one skip track. The Chronic comes closest - I only skip The $20 Sack Pyramid and The Doctor's Office (
![scusthov :scusthov: :scusthov:](https://www.thecoli.com/styles/default/xenforo/smilies/scusthov.gif)
) but they're skits not songs.
So although nothing's perfect there's plenty of legendary albums.
Another important point is I don't go by rep, for me to consider something a classic I have to enjoy it. I don't particularly like Amerikkka's Most Wanted by Ice Cube for example, even though for many people that is one of the all time great albums, I just don't fukk with it so I don't consider it a classic