Am I correct in assuming that you only have 10 lbs to lose for what you consider your ideal weight? If that is the case, what you need might not be so much a diet, as a careful look into your eating and exercising lifestyle and a plan on managing your health (and weight) long term.
Too often, people think of "diets" as activities that they perform for a certain amount of time, and then they go back to their old way of living when they are done. Then, of course, they lose all of the benefit from the work the did during their diet. Lose 10 lbs, gain 10 lbs, lose 10 lbs again, gain 12 lbs, lose 10 lbs, so on and so on.
There is a lot of great information here on all kinds of healthy life-styles that can keep your body in top shape. I personally prefer calorie-counting and plenty of exercise, but I'd suggest that you start by first looking at all the possible options here and find what fits your personality and situation best.
Good luck!