On opethforum.com a user used to the data from Hurt/Heal games to analyze each Opeth track an rank it according to the consensus (Link). I don't agree with this list but here's what the results were:
573,42 | 1 | 1 | The Moor
398,56 | 1 | 8 | Blackwater Park
393,38 | 1 | 2 | Deliverance
331,14 | 1 | 5 | Reveries/Harlequin Forest
326,80 | 2 | 6 | Serenity Painted Death
313,76 | 1 | 1 | Windowpane
307,28 | 2 | 2 | Bleak
307,17 | 2 | 2 | The Baying of the Hounds
261,64 | 3 | 1 | The Leper Affinity
248,97 | 3 | 1 | Ghost of Perdition
236,20 | 3 | 5 | Face of Melinda
234,46 | 1 | 1 | Advent
234,26 | 4 | 4 | The Drapery Falls
232,37 | 1 | 6 | Hessian Peel
220,09 | 2 | 5 | Hope Leaves
203,01 | 1 | 3 | When
194,46 | 2 | 1 | Wreath
190,82 | 2 | 5 | To Bid You Farewell
188,61 | 5 | 5 | Dirge for November
187,64 | 1 | 2 | Under the Weeping Moon
183,85 | 2 | 3 | The Lotus Eater
165,85 | 2 | 2 | April Ethereal
163,38 | 4 | 3 | Beneath the Mire
155,67 | 5 | 4 | Moonlapse Vertigo
155,04 | 4 | 4 | Closure
147,54 | 6 | 6 | The Funeral Portrait
141,72 | 3 | 2 | The Night and the Silent Water
140,26 | 2 | 4 | Forest of October
138,03 | 3 | 2 | Heir Apparent
135,99 | 5 | 8 | Isolation Years
134,26 | 3 | 6 | Demon of the Fall
134,22 | 3 | 6 | To Rid the Disease
126,72 | 3 | 1 | In the Mist She Was Standing
117,96 | 3 | 3 | A Fair Judgement
115,59 | 7 | 3 | Harvest
115,41 | 4 | 2 | Godhead's Lament
105,60 | 5 | 2 | In My Time of Need
105,34 | 6 | 3 | Benighted
095,01 | 4 | 5 | Master's Apprentices
092,62 | 4 | 4 | Black Rose Immortal
087,81 | 5 | 7 | Credence
087,81 | 4 | 9 | Epilogue
084,64 | 6 | 6 | Hours of Wealth
080,18 | 7 | 7 | White Cluster
079,08 | 8 | 7 | Patterns in the Ivy
073,34 | 4 | 4 | Burden
065,80 | 4 | 5 | The Twilight is My Robe
063,65 | 6 | 8 | Karma
053,82 | 7 | 4 | Atonement
053,55 | 6 | 3 | Death Whispered a Lullaby
050,01 | 5 | 7 | The Apostle in Triumph
049,11 | 5 | 6 | By the Pain I see in Others
048,35 | 7 | 7 | Ending Credits
046,98 | 8 | 7 | The Grand Conjuration
041,35 | 7 | 5 | The Amen Corner
038,30 | 5 | 7 | Hex Omega
038,06 | 5 | 3 | Nectar
035,60 | 6 | 5 | Porcelain Heart
033,80 | 6 | 4 | For Absent Friends
031,96 | 6 | 3 | Silhouette
027,53 | 8 | 8 | Weakness
026,49 | 8 | 1 | Prologue
019,43 | 7 | 1 | Coil
015,34 | 9 | 4 | Madrigal
013,90 | 7 | 6 | Requiem