It is a droid? use the Ionization blaster
It has high soak? use stun... in fact.. use stun regardless
You are stuck at medium range? Okay i guess i will use the lethal setting. Unless someone here has the Strong arm talent and throw a stun grenade
AFAIK i think a weapon set on stun only was used once. Yet my game sessions, seem to have every combat now my players use stun. Kind of ruins the whole feel of star wars. and it makes it pointless to have enemies with decent amount of soak