No, i’m not expressing my opinion but rather i want to post a clever algorithm done by Robert The Radish on Y! blog. Robert comes up with a mathematical way to determine the top albums of all time. The list is based on the American market and “Greatest Hits” albums and live albums were not eligible. Here’s how he did it:

**“Album Staying Power Value + Sales Value + Critical Rating Value + Grammy Award Value”**

- Sales Value = Sales Multiplier * Staying Power Value
- Staying Power Value (SPV) is: used CD sales data: In the secondary market you can expect to pay around $9.50 for a copy of Rumours (19 mm sold) by Fleetwood Mac, but you would only pay $1.38 for a copy of Cracked Rear View by Hootie (16 mm sold)
- Critical acclaim: multiple reviews for each album from a diverse cross section of music magazines, newspapers and music review websites to come up with the average review number. Ratings Value = Sales Value * Rating Multiplier
- Grammy Award Value and it simply looks at how many Grammy Awards each album has won. This is the least important of the components in our formula

So here’s the list of top 20 albums:

** #20. Faith – George Michael**

Year: 1987 Units Sold: 10 Million

SPV: $9.19 Rating (Stars): 4 Grammys Won: 1

Calculated value per unit based on the formula: $9.79

**#19. ****Appetite For Destruction – Guns N’ Roses **

Year: 1987 Units Sold: 15 Million

SPV: $8.81 Rating (Stars): 4 Grammys Won: 0

Calculated value per unit based on the formula: $9.81

** #18. Purple Rain – Prince**

Year: 1984 Units Sold: 13 Million

SPV: $8.74 Rating (Stars): 4.75 Grammys Won: 2

Calculated value per unit based on the formula: $9.82

**#17. Houses Of The Holy – Led Zeppelin**

Year: 1973 Units Sold: 11 Million

SPV: $9.10 Rating (Stars): 4.5 Grammys Won: 0

Calculated value per unit based on the formula: $9.93

**#16. Born In The U.S.A. – Bruce Springsteen**

Year: 1984 Units Sold: 15 Million

SPV: $8.91 Rating (Stars): 5 Grammys Won: 0

Calculated value per unit based on the formula: $10.29

**#15. Nevermind – Nirvana**

Year: 1991 Units Sold: 10 Million

SPV: $10.07 Rating (Stars): 4 Grammys Won: 0

Calculated value per unit based on the formula: $10.67

**#14. Van Halen – Van Halen**

Year: 1978 Units Sold: 10 Million

SPV: $10.23 Rating (Stars): 4.25 Grammys Won: 0

Calculated value per unit based on the formula: $10.84

**#13. Rumours – Fleetwood Mac**

Year: 1977 Units Sold: 19 Million

SPV: $9.52 Rating (Stars): 5 Grammys Won: 1

Calculated value per unit based on the formula: $11.47

**#12. The Wall – Pink Floyd**

Year: 1979 Units Sold: 23 Million

SPV: $10.20 Rating (Stars): 4.75 Grammys Won: 1

Calculated value per unit based on the formula: $12.51

**#11. The Joshua Tree – U2**

Year: 1987 Units Sold: 10 Million

SPV: $11.50 Rating (Stars): 4.5 Grammys Won: 2

Calculated value per unit based on the formula: $12.54

**#10. Metallica – Metallica**

Year: 1991 Units Sold: 14 Million

SPV: $12.08 Rating (Stars): 4.25 Grammys Won: 1

Calculated value per unit based on the formula: $13.38

**#9. Led Zeppelin – Led Zeppelin**

Year: 1969 Units Sold: 10 Million

SPV: $12.83 Rating (Stars): 4 Grammys Won: 0

Calculated value per unit based on the formula: $13.60

** #8. Hotel California – Eagles**

Year: 1976 Units Sold: 16 Million

SPV: $12.00 Rating (Stars): 4.75 Grammys Won: 0

Calculated value per unit based on the formula: $13.81

**#7. The White Album – The Beatles**

Year: 1968 Units Sold: 19 Million

SPV: $12.00 Rating (Stars): 5 Grammys Won: 0

Calculated value per unit based on the formula: $14.39

**#6. Led Zeppelin IV – Led Zeppelin**

Year: 1971 Units Sold: 23 Million

SPV: $12.42 Rating (Stars): 5 Grammys Won: 0

Calculated value per unit based on the formula: $15.44

**#5. Abbey Road – The Beatles**

Year: 1968 Units Sold: 12 Million

SPV: $14.94 Rating (Stars): 4.25 Grammys Won: 1

Calculated value per unit based on the formula: $16.23

**#4. Physical Graffiti – Led Zeppelin**

Year: 1975 Units Sold: 16 Million

SPV: $14.31 Rating (Stars): 4.75 Grammys Won: 0

Calculated value per unit based on the formula: $16.38

**#3. Thriller – Michael Jackson**

Year: 1982 Units Sold: 27 Million

SPV: $13.49 Rating (Stars): 4.5 Grammys Won: 4

Calculated value per unit based on the formula: $17.39

**#2. Dark Side Of The Moon – Pink Floyd**

Year: 1973 Units Sold: 15 Million

SPV: $16.08 Rating (Stars): 5 Grammys Won: 0

Calculated value per unit based on the formula: $18.57

**#1. Songs In The Key Of Life – Stevie Wonder**

Year: 1976 Units Sold: 10 Million

SPV: $16.84 Rating (Stars): 5 Grammys Won: 2

Calculated value per unit based on the formula: $18.71