To be honest, I prefer Sword Art Online II over the first. I liked the concept of Death Gun and I liked how Sinon was introduced, it was pretty badass.
Ok, Kirito having a female avatar was pretty funny at first, but it got kind of annoying. I think that was done just to change things up a bit, like having a female lead.
I admit that I was disappointed when they unveiled Death Gun, it wasn't all that difficult and I expected some mystery. All I got was fighting. I don't like how they shoved several different problems into the same season. The summary only describes about half of the show.
And one final complaint: The lack of male characters is bothersome. Watching Kirito and his harem isn't exactly my idea of entertaining.