I liked season 2.
But season one will always be my favorite because of Prue/Andy. However, seasons 1-3 are my favorite b/c they're the Prue years.
I think the only season 2 episodes I was really turned off to were
Ms. Hellfire and
Give Me A Sign b/c I don't like Bane!
And if I had to pick my favorites, I think they'd be:
Witch Trial (sad but Prue mourns the loss of Andy);
Morality Bites;
The Painted World;
P3 H2O;
Reckless Abandon;
Awakened; and
Murphy's Luck.