I did South Beach for a while, and I liked how fast I lost on it, but I couldn't stay away from carbs. And even after I was allowed to reintroduce carbs, I found that if I worked out too long I would get REALLY ill. Like weak, nauseous, dizzy. That never happens when I'm eating carbs lol.
I like WW. It's cool cos nothing is off limit, and it encourages that you gravitate to more nutritious things since points relies on not only calories, but also fat and fiber. Also, I think it's easier to calculate points than count calories. Cos after a while, you can automatically calculate the points value of stuff in your head, and it's easier to add solid numbers like 2, 5, and 4 than to add like 250 plus 480 plus 75.
So yeah, I like it. Lots of support at the meetings, you just have to find a good one. But I'm probably bias