Well, only you can decide what diet is best for you.
As you can tell from the main forum page, there are lots of diets represented here.
I personally have used calorie counting and just cutting back in the past, and always gained and lost the same lbs. over and over again. Why? Because once I hit my goal weight, I start back with my old habits and the weight comes back on. It always comes back quicker than it went away!
Currently I am following Paul McKenna's plan.
If you are hungry, eat.
Eat only what you want, not what you think you should.
When you think you are full, stop.
Easy enough on paper, but I'm struggling this week. Maybe it's almost that time of the month?
Mostly it comes down to eating less (than you do now) and fitting exercise into your day. Paul McKenna has a free website if you want to check it out (mckenna.com)