I've never liked Nintendo Power that much, but seem to always be getting it because of resubscription bribes. It is getting better lately though, with the cool Making of Twilight Princess articles and the Community section.
The only gaming magazine I truly love, however, is Computer Games. It has marvelous, mature, insightful writers, emphasis on quality reviews based on the finished game, and about eight delicious essays per issue. It's not just a bunch of pictures and one-line jokes. I've been subscribed for what seems like forever. One of the only things I realized I didn't do at E3 was go to their booth and see if any of their actual staff was there.