Just finished the third season. Really good.
It borrowed heavily from the Daredevil comic arc "Born Again" by Frank Miller. (For my money, the best DD story arc ever)
If you know that story, you'd know they couldn't faithfully adapt the whole think on Netflix...Matt and Karen would've had to be in different places in their lives at the start of the season and the Avengers would've featured in the final act.
They did use a lot of it though, as well as bits from other comic arcs.
I loved the Bullseye guy.
My favorite line of the season (Fisk talking to Bullseye) "You were taught to cover yourself with many fictions. You fashioned yourself into something society could tolerate"