I'm actually looking for two things: good magazines I haven't found, and good magazines to submit science fiction stories to. I also want to know where I can find your favorite magazines; I've been getting them at the Barnes&Noble in town, but they sell out quickly. Once all they had was three copies of F&SF, and I found it to be excellent. Another time I found five titles, but I haven't seen Asimov's there, and I always liked that one.
Analog was excellent as well, as they've always been. The British Interzone was very well designed, with excellent layout and large amounts of excellent artwork, but I didn't like any of the writing. It just didn't suit my taste.
I have yet to find any decent online mags, I'm sure you guys can supply me with that.