As some have said, I think Season 4 had some of the series highest highs and lowest lows. Season 1 is still king for me but it's between 3 and 4 for second place, but I think I'd still give it to 3. Season 1 still has the best sense of horror but on the flip side, Season 3 does a really good job at being a more light-hearted, colorful adventure. It felt like a pop music video at times.