Hi
I joined WW 7 years ago and lost 3 stone in 10 months. Then due to circumstances it came piling back on. So, to support a friend I rejoined a WW meeting in 2008. Over the course of 2 years, I rejoined 3 times, but just couldnt get into it. I also suffered frequent migraines which I thought at the time, was just 'hereditary'.
In march this year i joined SW, and so far I have lost 1 stone (putting on here and there occassionally due to my shift work pattern). Because of my gains, i decided to do a WW week at home, it didnt work, i constantly felt hungry which caused me to overeat with the thought of 'oh well, i will get back to it tomorrow' and my headaches mysteriously reappeared (hadnt had one since march). I also found i was missing my healthy meals that I was having on SW, so yesterday, I restarted the SW plan, and boy, was it heaven!! Also, my hubby was doing WW and had plateau'ed so I advised him to try SW for a week which he did. Although he said he felt a lot fuller after a meal than he did on WW, he just missed the flexibility of being able to eat 10 WW Desserts a day if he wanted (3 points vs 8.5 syns!!) so he has decided to return to WW. So, its all down to what you think suits your lifestyle. I would try SW for two weeks and see how you get on.
(Also, doing SW has totally broken my lifelong habit of eating my fave foods, crisps and burgers, I always look for alternatives now (a healthy jacket potato) and if i do succumb, I find that i dont enjoy it and wish i had had something else, lol!)