Yes, it really depends on your style of scrapbooking. I had, at one point or another, subscriptions to all three (and Paper Kutz) and I have let all run out except Simple Scrapbooks. I liked the emphasis on the pictures and simplicity. There are sketches which I really like and an article where they show a layout and the supplies needed. Then they show if you add a few more supplies what the layout can look like and then finally a few more supplies and revved up layout. I really like the different options. They also have lots of ideas for mini books or gift books, which I like doing as well.
If you are into the different mediums (paint, embossing, etc.) Memory Makers might be more up your alley because they try to keep up the latest trends. It was the first magazine I had when I started scrapbooking and I learned a lot from it.