Best Strategies and Ships for the Different Difficulties

I have had really good luck using the projectile cannon with the energy cannon. If you upgrade recharge time on the projectile cannon, it can do a ton of damage. Just warp in semi close to the enemy ships and they die in a few seconds. You don't even need fighters or missiles or nukes. As you get more ships just add more cannons. Add in some repair drones just so you don't ever need to return to a station.