My thoughts on each season
Season 1 was actually pretty good. Billy Bob Thorton's character made it enjoyable. The whole season was a pleasant surprise, which obviously inspired me to keep watching the series.
Season 2 is easily my favorite. I liked the characters. Especially Woodbine's character. Very memorable dialogue and scenes. The only thing I didn't like about season 2 was how it ended. Very anti climatic. But still, aside from that, my favorite season.
Season 3 was surprisingly not that bad, but not great either. It had it's moments. But compared to seasons 1 & 2 it wasn't as impressive. Certainly still watchable though.
I don't understand all the hype over season 4. I could only make it through like 3 episodes. I just found it incredibly boring and slow. I won't be watching anymore of this season. Hopefully season 5 is better.