I actually haven’t read a ton of Nightwing. I’ve read many arcs, but before I got this DCU app, I bought comings when I saw a good deal on a series I enjoyed which means I have thousands upon thousands of comics, but not a ton of complete story arcs. Going to have to do something with those some day.
From what I have read, I agree for the most part with BatJamags. Chuck Dixon is a consistently great writer. Another plug here for his work on the Robin series featuring Tim Drake.
Grayson had an amazing run on the original Titans series (that’s Titans not Teen Titans) which heaving featured Dick, but she did do some weird stuff when she took over Nightwing’s solo series. I’m not quite as harsh as BatJamags, but it’s definitely got some horrible stories. I’ll actually say the infamous story that everybody hates I think actually works as a moving story. What doesn’t work is the lack of follow up and the writer’s own feelings about the story. However, I also enjoyed parts of her run. The One Year Later was the worst. Not sure about the other writers. New 52 Nightwing was pretty good though not exceptionally good. The series called Grayson is quite good from what I’ve read of it, and it’s generally well regarded. The Rebirth Nightwing has been fine from what I’ve seen.
Of course Nightwing is one of the central characters of the DC universe, so many of his most defining moments actually come in books like the Teen Titans, Outsiders and various Bat Family series.