I have found that calorie counting (or approximating) in my case works just as well as weight watchers, however if you don't have much experience or knowledge about good, filling foods or calorie counting, or portion control WW is a great place to learn it!
You also have to ask yourself if you are prepared to track every single thing you eat, because if you don't you will not get the full benefits of WW.
I have recently been considering re-joining online, but based on coversation with other WW users I have determined that it is probably not worth the money for me at this time.
---sorry if this wasn't helpful----!!!
Good luck!