I have done both. Although WW was nice It really didnt get me into the mind set of changing my lifestyle, food wise. I have done the 17 day diet only into cycle 2. I decided to go with it as it was almost like a flushing out the system, and I thought it might get me into the proper mind set. I feel it's really hard to stick with long term. (although I still drink keifer smoothies)
I have talked about this a lot in anwsering other weight questions, but I bought a body bugg, and not only do I belive 110% that it saved my life, but I am finally living!! Not going to go into a ton of detail, as I have my son sleeping on my chest and I can only type w one hand, lol. Basically it is an arm band that you wear and it has sensors in it. u wear it all the time unless if your in water, or charging it. It tracks your steps, activity (once your heart rate gets to 3x over normal this is considered activity), calories burned. You set the program up and log your food (It will tell u how many calories your allowed) From there it will also give u a daily deficit that u should meet (calories burned - calories consumed = deficit. The deficit is where the weightloss comes into play 3500 calories are need to loose 1 pound)
I have been on it almost 7 months and have lost 60lbs so far. If u want more info go to bodybugg.com or their fb page bodybugg. I have referal codes and they are on sale right now. Depending on the model I think about $100 which includes 6 month subscription to their site to track.
I am.... was just a plain jane majorly over weight mom topping in at 228, as of yesterday down to 168 (lightest i've been in almost 4 years)