My Favorit has to be Season 6 because it's Doctor and the Ponds just having adventures and RIVER IS QUEEN. But, my least Favorit would have to be Season 3 because Martha wasn't a super interesting companion.. I did Liebe those episodes where 10 turns human but..
Favorit season: Season 3, because Martha "Boss arsch hündin who doesn't take the Doctor's shit" Jones and the Master were in it, oder Season 5. Fetus Roramy and Vampire in Venice is what keeps me going.
Least Favorit season:.. Hmm... Probably season 8, even though I Liebe it, some of it just bores me. I get to see my Queen Clara though so it's ok (◡‿◡✿)
