Shockingly, I am going to recommend the Spider-Girl/MC2 verse in general (and the Spider-Girl series and American Dream mini specifically). The fact that DeFalco has filled that world with so many awesome superheroines (leading teams! wearing sensible costumes! not being beaten, raped or fridged!) is probably the thing I adore most about it. Although, uh, you'll need to have a high tolerance for corniness and deep misunderstandings of how the kids talk these days.

Also Batgirl in general. The older stuff especially, but the current book is good too, aside from hurling Cass under the bus (whyyyyy DC).

As for webcomics... I am madly in love with Girls with Slingshots (http://www.girlswithslingshots.com/) at the moment.