This will be updated as I continue to watch through the show.

 

0/10 (Garbage)

158. Every Little Thing She Does (Season 6)

157. A Royal Problem (Season 7)

156. Keep Calm and Flutter On (Season 3)

155. Three's a Crowd (Season 4)

154. Rainbow Falls (Season 4)

 

1/10 (Terrible)

153. Do Princesses Dream of Magic Sheep (Season 5)

152. Shadow Play (Season 7)

151. What About Discord? (Season 5)

150. Fluttershy Leans In (Season 7)

149. Princess Spike (Season 5)

148. Daring Don't (Season 4)

147. Owl's Well That Ends Well (Season 1)

146. Spike At Your Service (Season 3)

145. 28 Pranks Later (Season 6)

 

2/10 (Awful)

144. Somepony to Watch Over Me (Season 4)

143. The Cart Before the Ponies (Season 6)

142. Applejack's Day Off (Season 6)

141. Marks and Recreation (Season 7)

140. Stare Master (Season 1)

139. Amending Fences (Season 5)

138. Secrets and Pies (Season 7)

137. Magical Mystery Cure (Season 3)

136. Look Before You Sleep (Season 1)

 

3/10 (Bad)

135. Rock Solid Friendship (Season 7)

134. Honest Apple (Season 7)

133. Twilight's Kingdom (Season 4)

132. No Second Prances (Season 6)

131. The Cutie Re-Mark (Season 5)

130. The Crystal Empire (Season 3)

129. Appleoosa's Most Wanted (Season 5)

128. Boast Busters (Season 1)

127. The Mane Attraction (Season 5)

126. Putting Your Hoof Down (Season 2)

125. Power Ponies (Season 4)

124. Dragon Quest (Season 2)

123. Daring Done? (Season 7)

122. The Show Stoppers (Season 1)

 

4/10 (Weak)

121. The Hoofields and McColts (Season 5)

120. Made in Manehattan (Season 5)

119. The Cutie Pox (Season 2)

118. Princess Twilight Sparkle (Season 4)

117. The Gift of the Maud Pie (Season 6)

116. One Bad Apple (Season 3)

115. Crusaders of the Lost Mark (Season 5)

114. It Ain't Easy Being Breezies (Season 4)

113. Baby Cakes (Season 2)

112. A Bird in the Hoof (Season 1)

111. To Where and Back Again (Season 6)

 

5/10 (Meh)

110. Game Ponies Play (Season 3)

109. Twilight Time (Season 4)

108. Uncommon Bond (Season 7)

107. Not Asking For Trouble (Season 7)

106. Inspiration Manifestation (Season 4)

105. Canterlot Boutique (Season 5)

104. The Times They Are a Changeling (Season 6)

103. Forever Filly (Season 7)

102. Discordant Harmony (Season 7)

101. A Canterlot Wedding (Season 2)

100. All Bottled Up (Season 7)

99. Brotherhooves Social (Season 5)

98. Bats (Season 4)

97. On Your Marks (Season 6)

96. Parental Glideance (Season 7)

95. Tanks For the Memories (Season 5)

94. May the Best Pet Win (Season 2)

93. Castle Sweet Castle (Season 5)

92. Rarity Takes Manehattan (Season 4)

91. The Mysterious Mare Do Well (Season 2)

 

6/10 (Okay)

90. Triple Threat (Season 7)

89. Family Appreciation Day (Season 2)

88. Trade Ya (Season 4)

87. Call of the Cutie (Season 1)

86. Buckball Season (Season 6)

85. A Flurry of Emotions (Season 7)

84. Scare Master (Season 5)

83. Viva Las Pegasus (Season 6)

82. Ponyville Confidential (Season 2)

81. Apple Family Reunion (Season 3)

80. Hard to Say Anything (Season 7)

79. Bridle Gossip (Season 1)

78. Slice of Life (Season 5)

77. The Crystalling (Season 6)

76. A Dog and Pony Show (Season 1)

75. Wonderbolt Academy (Season 3)

74. Gauntlet of Fire (Season 6)

73. A Health of Information (Season 7)

72. Friendship is Magic (Season 1)

71. Read it and Weep (Season 2)

70. Leap of Faith (Season 4)

69. Griffon the Brush Off (Season 1)

68. Party Pooped (Season 5)

 

7/10 (Good)

67. The Ticket Master (Season 1)

66. Simple Ways (Season 4)

65. Bloom and Gloom (Season 5)

64. Fall Weather Friends (Season 1)

63. Just For Sidekicks (Season 3)

62. Equestria Games (Season 4)

61. Rarity Investigates (Season 5)

60. P.P.O.V. (Season 6)

59. Celestial Advice (Season 7)

58. Pinkie Apple Pie (Season 4)

57. Top Bolt (Season 6)

56. It Isn't the Mane Thing About You (Season 7)

55. Applebuck Season (Season 1)

54. Winter Wrap Up (Season 1)

53. For Whom the Sweetie Belle Toils (Season 4)

52. The Fault In Our Cutie Marks (Season 6)

51. Campfire Tales (Season 7)

50. Sleepless in Ponyville (Season 3)

49. The Cutie Map (Season 5)

48. Maud Pie (Season 4)

47. Where the Apple Lies (Season 6)

46. Too Many Pinkie Pies (Season 3)

45. The Return of Harmony (Season 2)

44. Secret of My Excess (Season 2)

43. Filli Vanilli (Season 4)

42. Hearthbreakers (Season 5)

41. To Change a Changeling (Season 7)

40. Spice Up Your Life (Season 6)

39. Swarm of the Century (Season 1)

38. Green Isn't Your Color (Season 1)

37. Flight to the Finish (Season 4)

36. Once Upon a Zeppelin (Season 7)

35. The Lost Treasure of Griffonstone (Season 5)

34. Hearts and Hooves Day (Season 2)

33. Hurricane Fluttershy (Season 2)

32. Feeling Pinkie Keen (Season 1)

 

8/10 (Great)

31. Make New Friends But Keep Discord (Season 5)

30. Newbie Dash (Season 6)

29. MMMystery on the Friendship Express (Season 2)

28. Super Speedy Cider Squeezy 6000 (Season 2)

27. Suited For Success (Season 1)

26. A Hearth's Warming Tail (Season 6)

25. Pinkie Pride (Season 4)

24. Dragonshy (Season 1)

23. Flutter Brutter (Season 6)

22. Fame and Misfortune (Season 7)

21. Over a Barrel (Season 1)

20. A Friend in Deed (Season 2)

19. Sweet and Elite (Season 2)

18. Luna Eclipsed (Season 2)

17. Hearth's Warming Eve (Season 2)

 

9/10 (Amazing)

16. Castle-Mania (Season 4)

15. The Saddle Row Review (Season 6)

14. The One Where Pinkie Pie Knows (Season 5)

13. The Cutie Mark Chronicles (Season 1)

12. Sonic Rainboom (Season 1)

11. Lesson Zero (Season 2)

10. The Best Night Ever (Season 1)

9. Party of One (Season 1)

8. It's About Time (Season 2)

 

10/10 (Perfect)

7. Testing Testing 1, 2, 3 (Season 4)

6. Dungeons and Discords (Season 6)

5. The Perfect Pear (Season 7)

4. Sisterhooves Social (Season 2)

3. The Last Roundup (Season 2)

2. Magic Duel (Season 3)

1. Stranger Than Fanfiction (Season 6)