Muscle Media is pretty good all in all, but can you say EAS. They own the mag, and shamelessly promote their products, which are good, but it cheapens an otherwise good mag.
Muscle & Fitness and Flex are owned by Joe Weider through one of his companies, which means that there is definitely some good advice in them, but there is also a lot of BS that goes with them. Most of us don't have the time and resources to train in a lot of the suggested ways, and the routines they recommend are largely not the ones used by the athletes anyway.
Remember in any of the magazines you read to look for the word "advertisement" in small print at the top and bottom of the pages, there are lots of them in there.
Most of the Pros featured in the mags are paid for their time, and with that for their "routines." The fact is that most of those guys have been training for so long that they may know what body parts they intend to work, but the exercises/weights/sets, and so on, are completely up to how the day feels. Don't get me wrong, they go as hard as they feel they can. But they listen to their bodies more than numbers of sets/reps.