Aperture, but it costs a fortune. It only comes out 4 times a year and the quality of reproduction is outstanding. Of the more popular priced publications, I believe Outdoor Photographer to have the best content, but it all depends what you are into.
I got a deal on popular photography (a few bucks), which is only okay. Seems more like one giant ad which I suppose we can thank the internet for. Im not sure I could honestly recommend it.
I read Photo District News every month. It's more business than hardware or technique oriented and aimed more at commercial photographers than wedding/portrait folks or non-pros.
They also have another one named colour but I never got my hands on it.
There are a few others available here in the UK. Like aperture and such, but sometimes they border too much into "nouveau photography" which I don't enjoy.
Of the art+technical magazines, I'd give it hands down to BJP, to which I do subscribe..
I don't subscribe to any photography magazines per se. I do receive Photoshop User from NAPP. The web has more information and news on photography and photo equipment than I can keep up with.
