I can't think of any magazine that publishes really good gear reviews, where they talk about the good AND the bad.
Alert Diver has well-written articles and can be informative. GUE's magazine, Quest, has incredible photography and always has interesting articles about exploration projects, and sometimes just articles about diving some cool places. Diver magazine has some good columnists. But just like with the vast majority of magazines out there on ANY subject, the main diving magazines are so beholden to their advertisers that it can sometimes be difficult to figure out if what you are reading is paid advertising or an article . . .