You can get more Points from killing without dying, so use the guns you have.

Flying high with a bomber gives more safety to you, but its hard to aim, right? NO! Press F7 to go into bomber view, you will see a small symbol that looks like a upside down t with a circle in it. That symbol indicates where the bomb will hit if you release it at that moment, allowing for precision and safety at the same time.

Every machine has a machine that gives a research boost to it, so use it often when in battle.