I did the Swank diet for a while but my craving for red meat got the best of me.

I did feel better on it. If you decide to do the Swank diet, I could see how you could lose weight with it too.
I have heard great things about WW. I know several people who have done well on it and have been able to keep the weight off. It does seem to be nutritionally sound, which is a huge plus.
Good luck! I hope you find a diet that is right for you.