RE: thinking of joining WW but scared of another
I have done WW before with good results. It is simplified calorie control...lose weight by eating less calories. Simplifies it, and offers you ideas and support to stick. I have lost about 20 lbs and kept it off, it has been about a year. They were postpartum pounds. I think WW is great, depending on your goals. I am glad I did it. I learned a LOT about the impact of food on your body.
They are experts at getting you to stick to your goal. You need to eat clean to keep from being hungry (but the group definitely has its "hey have fat free muffins and fat free pudding and fat free blah blah blah for breakfast" crowd...not a healthy diet IMHO).
With that being said, I think that WW and low calorie diets might be detrimental to packing on muscle, or avoiding losing muscle when you lose weight. I think I did lose some muscle, and now that I am at my goal weight, I find that I do not have the muscularity I seek. You can tell by looking at the pictures of WW success stories on their web site. Most folks there aren't that muscular, even when they are thin. In fact, sometimes I'd call them a skinny fat. You are not supposed to lose muscle when you lose weight slowly (no more than 2 lbs a week) though, so who knows. I only lost 2 lbs a week and WW espouses not to lose more than that after your initial week or two when you might lose more.
I just think that when you are on a low calorie diet, you can't gain any muscle while you are losing fat, and you might actually lose some muscle. Your bodyfat might not be that low. It slows your metabolism too, so you have to be careful, esp if you are working out. Cycling the calories (saving all my flex points for the weekend) can help.
Right now I have started doing "Lean Bodies" which is very very clean eating...it is a book (you can get it out of the library). Someone mentioned once it reminds them of Body for Life. The book is full of testimonials from folks who were on low cal diets and their metabolism slowed to a crawl...they kept having to cut and cut and cut back because of how slow their metabolism was.
I am at a "healthy weight" according to the scale and I am a small clothing size... but I don't have the look I want. Not enough muscle and bodyfat isn't all that low...even though the scale says the right thing. WW can't get me out of that situation.
HTH
Or maybe I just confused you more

Jen