My opinion. What kind of energy is the best?

There are a lot of kinds of energy in the world: solar, electrical, mechanical, and wind. It is very hard to understand what type of energy is the best. I think, wind energy is the best one. This type of energy is the safest one; it is also ecologically clean. It has a lot of advantages,for example,it is a great source of energy generation. But it has some disadvantages: problems when there is zero wind, and high price of generator. Such countries as China, the USA, European countries, Japan, Russia, and some countries of South America use wind energy. I think that scientists will develop this type of energy and in the future we will be able to see more developed wind generators.
This is good video about wind energy: http://www.youtube.com/watch?v=LQxp6QTjgJg