What type do you think is best? Will it be fire, with it's blazing power or water that is calming and destructive.
Although water may have an advantage it dosen't mean it is the best. I go with fire, my entire team in Leaf Green is Fire, which may or may not be a good idea, but it worked. The fact that most fire moves can also cause burn has saved me in a few battles. The power is (snap) fierce, and what they lack in defence they make up in speed, plus to make up for the whole rock, ground, and water problem two word,s solar beam.
But don't take my side! Take yours do you agree or disagree, the choise is yours.