Whatever you think. Seriously, this is such a subjective topic that will are likely to get N different answers, where N is the number of people you ask.
But I agree with Diaglo. Content. The more I find useful or entertaining, the more I like it. Dragon and Dungeon are especially hit or miss to me, Dungeon much more so than Dragon. I decided to not re-up my subscription to Dungeon way back when they statted the Epic Awakended Whale Druid. I personally have no use for such things. Since my sub ran out, I have picked up the odd copy here and there, and probably will in the future.
My favorite RPG mag is Knights of the Dinner Table. I love the Knights, though I don't like the rest of the strips, the RPG content has been very handy, and the regular columns are usually a good read.