I started Weight Watchers in October and have lost 47 pounds. My loss has slowed down in the last few months, but that is to be expected. As long as I'm trending downward, I'm happy with it.
Here's my take on Freestyle vs. Points Plus. I lurk in a WW Facebook group, and a lot of people are frustrated with Freestyle. They say their weight loss either stopped or they started to gain when Freestyle was rolled out in December. On Points Plus, non-starchy vegetables and fruits were zero points. Freestyle added a number of foods to the zero points list including chicken and turkey breast, all fish and shellfish, corn, beans, and whole eggs. Note that these foods are "zero points" and not "free foods." Many people saw this as a free-for-all, and began eating unlimited amounts of the zero point foods. Consequently, their loss slowed considerably and some people began gaining. Even though WW has a points system, it's still about limiting calories. Zero point foods still have calories and still need to be monitored.
The way I see the zero points foods is that they should be the base for your meals. For example, breakfast can be built around a serving of eggs (which is two). Using your points allowance, you can add items like turkey bacon and an English muffin. Add some zero point veggies to the eggs and a serving of fruit and you have a low-point breakfast. Lunch and dinner can be built around reasonable servings of chicken, turkey, or fish. You can really have any type of food you want, you just have to count the points. Besides the daily allowance of points, you get an additional weekly allowance that can be used anytime during the week. You can add a few each day, use them all over a few day, or not use them at all. It's very flexible.
In terms of being low-carb, WW encourages you to eat foods that are higher in protein. These foods will fill you up and help keep you from snacking or feeling hungry all day. However, it's not a traditional low-carb plan at all. You can have your carbs and still lose weight. You just have to count them. Personally, I cannot go without carbs. I've tried and I get headaches and basically feel awful. And I'll feel like this for weeks until I start eating carbs again. I do stay away from heavily processed carbs. I stick with rice, whole-wheat pasta, and whole-wheat breads (pitas, tortillas, etc.). I eat a few servings of fruit each day. I also have oatmeal once or twice a week.
The best part is that for months, I have really had no desire to eat high-fat or sugary foods. I know that I won't feel well if I eat those foods and it's just not worth it to me. Yesterday was staff appreciation day at the school where I work. The staff room was brimming with donuts, muffins, cookies, a nacho bar, candy, etc. None of it appealed to me. I had some of the fruit salad with the lunch I brought from home. I've had to buy new clothes and it feels amazing to wear a smaller size. I have no desire to overeat and go back to my old size. So yes, I would recommend Weight Watchers. It works. But like any weight reduction plan, you have to stick with it for the long term.