Low-Carb (Atkins) is the only way for me. I tried over and over for the low fat thing, but never had success!!
My DH, years ago did the low-no-fat thing, lost a lot of weight...lot of exercise, too. He didn't look so good. He is on Atkins with me now, has lost those last few stubborn pounds, in stubborn spots, and says when he compares the two, this is the way to go. He does not feel the highs and lows in his energy.
We both feel great on Atkins!!
Good Luck!!