The best diet is a diet that's tailored to your own personal needs. It's IMPOSSIBLE to create the absolute best diet without knowing your:
Age. Gender. Weight. BF% or LBM. Goals. Health Conditions. Etc.
For example, the "best" diet for a 300lb strong-lifter is likely not the "best" diet for my personal self, as I'm: (likely) younger, lighter, (probably) fatter, looking to lose fat mass while maintaining strength, and I have poor digestion of meats and an intolerance to whey. Does it sound like the diet "perfect" for me would be "perfect" for you? Likely not.
IMHO, there are many common points between "perfect" diets. Regardless of your goals or the other stats, you'll want to consume around 1g of protein per lb body weight. The majority of your carbs around your workout time. As much low-calorie vegetable matter as you possibly can (I eat a pound of spinach a day. Every fucking day). As many omega fats and other EFA's as you can, in the proper proportions (eating way too many Omega 6 fats compared to the other EFA's, like almost every westerner does, is just as bad as not getting enough IMO). If you cannot obtain all the micronutrients and vitamins you need from food, a multivitamin should be included etc.