Should I main Akali or Fizz

Hello. So lately I've been really having fun playing with both champions, Fizz and Akali. I hear that they both have incredible outplay potential especially Fizz. But I don't know which one to main. Fizz has a mana early game problem why Akali has trouble getting cs in lane before level 6. What is your guys opinions? Please don't answer neither but if you're going to say neither then please give me suggestions for new champions instead. Thank you so much!