Being involved in the sport, and a fan for years I had to get a subscription to this mag when it first came out. This was the first one to come out, and is still around today.
The content is ok, and is filled with TONS of ads which you'll skip over. It usually takes me about a hour to read the entire magazine, so the content isn't fantastic.
The photos are good, and the event write ups are as well. It is however a little behind on the events as there are tons which come out weekly, but they do have excellent write ups.
Interviews are good with the fighters, and you learn a lot that you may not have known about them, where they are from, how they train etc.
You'll also get different techniques, diet tips, etc. in each magazine. So if you follow the sport, this is a no-brainer.