Abigail, Abigail, Abigail. The more I say it the more I dislike the -gail. But I strongly dislike Gail to begin with, so that's not surprising. I have always like Abby as a nickname. Cute, fun, and spunky.
Also, yes far far far too popular for me to ever get super excited about.
As I like Abby, I've come across some alternative full names for it, which I think are far superior to Abigail:
Abena
Abia(h)
Abijah