How do you rate Metallica's "Black album" (1991) on a scale from 1-10?!

How do you rate Metallica's "Black album" (1991) on a scale from 1-10?

1 bad
5 average
10 great

I'm comparing the 'Black' album as a stand alone piece. Comparing it to other Metallica albums will create error and bias.
1. Enter Sandman 10
2. Sad but True 10
3. Holier than thou 8
4. The Unforgiven 10
5. Wherever I May Roam 9
6. Don't Tread on Me 7
7. Through the Never 7
8. Nothing Else Matters 10
9. Of Wolf and Man 8
10. The God that Failed 7
11. My Friend of Misery 8
12. The Struggle Within 7

I would rate it an overall 9 for it's quality production and flow.