I just finished season 3, I liked seasons 1 and 2 but like I said in my previous post, they did feel like they meandered around a bit, which was nice but also not that gripping. Season 3 kept my interest a lot more (it helps that both Mike AND Nacho had full storylines to go through, so we could switch over to them and not stop the plot cold.)
The portrayal of Chuck's mental illness is incredibly strong. Almost any other show would have had his illness be either "The main problem is that he believes this crazy thing, and curing him involves getting him not to believe this crazy thing" or "He believes this crazy thing, and also he's very very sad all the time" or "It's all in his head. Better Call Saul makes it clear that the electrosensitivity Chuck experiences is not only very real, from his perspective, but also only a symptom of his mental illness, not the cause. Very few shows are willing to show that people can just become miserable, and stay that way, and that when people develop mental illnesses it's not just "oh all their family members rally around them" because people with mental illnesses destroy their relationships.
The people who viciously hate Chuck remind me of the people who viciously hated Skyler: they're getting in the way of our noble hero so they must be a bad person. But this ignores that both of them are right: In Skyler's case, Walt was cooking meth and killing people, and in Chuck's case, he's right, Jimmy shouldn't have been hired by Hamlin Hamlin and McGill. He is, in fact, unable to stop himself from conning people, and he shows that by continually sabotaging his own business in ways that would absolutely hurt HHM if he was working for them. It's possible that Chuck could have (and probably should have) supported Jimmy and helped him become a better person instead of working against him, so I'm not saying Chuck is without blame, but it's honestly alarming to me how many people have decided that a man who is mentally ill and self-destructing as a result is this monstrous bad guy, especially considering that Chuck ends up intentionally throwing away his last lifeline, then killing himself.. To me, the main antagonist up against Jimmy isn't Chuck or HHM or the legal system or whatever: it's Saul Goodman.
I think maybe Howard and Francesca are the only moral people on the show.