[Taera]

Generaly i use several varied ship designs each of which has its own strategy, usualy a modified default or a completely new design.

But in general it depends on the situation - if the enemy is superior in technology and/or outranges my weapons short-range or point-blank would do the trick putting this superiority to end. If the enemy is stronger i just put max range because that way my ships live longer. If i am superior i put optimal range or point-blank for those melee ships. (read - ripper ships)