I had a couple issues of the Marvel NOW run, but haven't read them, I'm gonna start with those, and down the road get the Frank Miller stuff.
Start with Frank Miller's run. There's other good runs of the character, but from what I read, that's the best take on his universe until this show. I loved the Brian Michael Bendis run, but I did not like how he wrote the characters. When I read it, it was my all time favorite story-line, despite his characterizations. This series made me dislike his take on Matt even more. The relationship between Matt and his priest is my favorite part of this Netflix series. I wish the comic book writers would drop the whole "devout Catholic" thing, because they're not respectful to his faith at all. Miller just didn't show it, so it never bugged me. Bendis also writes a lousy Bullseye. The antagonism that Miller builds is awesome! There's this issue called "Roulette" that will, hopefully, blow you away!
If you love Year One Batman, that's basically Frank Miller's run. It's kind of sad reading, because you get an idea of what Frank Miller's Batman run would have been back in the day. Daredevil is basically Batman without the Robins and with low tech, which I greatly prefer. However, he doesn't have the detective aspects, the huge mythos, Gotham, the rogue's gallery, and the compelling psychological angle. Still, a lite Batman is still Batman.
Daredevil, Captain America, and Wolverine switch between my 2-4 favorite superheroes. Captain America was my second favorite, until I read Frank Miller's Daredevil, but Cap's villains are so much better. I checked out the Marvel Now Daredevil, and didn't like it because it brought the character back to his roots as being more fanciful. That's why I don't like anything Batman related past the 90s, other than the DCAU and the Nolan movies, since he's more plausible. I think street-level characters like Batman, Daredevil, The Question, Black Widow, Elektra, and Punisher work better grounded. Captain America and Wolverine work well either way though.