I agree, fitday is very useful. I tend to eat the same thing day after day so once I got all my food entered with the nutritional information, it is very easy to use.
I also agree that you have to find what fits for you. I have tried Atkins but had a hard time sticking to it. Right now I am trying to avoid dieting and I am trying the eating clean method. Lean meats (chicken breast, turkey and fish) veggies, fruits and wheat pitas. I use only olive oil or olive oil spray. And I eat every 2 1/2 to 3 hours. My typical day looks a little like this:
Breakfast: 4 egg whites and one cup of melon
pre workout: low carb shake on the way to the gym
post workout: low carb shake and fruit
lunck: sliced turkey in a wheat pita with raw veggies
snack: low fat cottage cheese
dinner: chicken breast with veggies and fruit
snack: celery with natural peanut butter
The theary is to eat protein with every meal, it makes you stay fuller longer so your not always hungry. Also, you are never supposed to eat fat and carbs together. The body uses both for energy and if you eat them together, it will use the carbs for energy and store the fat.
I also work out 4-5 days a week doing both cardio and strentgh training. Strentgh training will help boost your metabolism.
Again, it is all about finding out what works for you and it may take a few tries. And what works for you may not work for your DH.
A website that I find very helpful is
http://www.oxygenmag.net/ They have forums that are very helpful and even include a few personnal trainers that give great advice.
Good luck!