I did a rewatch about 3 years ago. Can't remember exactly what order i had them in, but remember a few thing

• Definitely had Season 5 at the top of the list
• Season 7 was in the top half of my list. Hakeem Kae-Kazim was top notch as the villian
• Season 3 was toward the bottom; similar to you, was too much filler story at the start. Plus was not a fan of Chase.

If I had to guess, think that would mean my rankings were 5,2,7,6,1,3,8,4