air strike/500 with shield and quasar . could do autocannon with either eat for quick heavy hitting or I've started playing with the basic precision orbital again. Quick cooldown, kills most big things except titan if it hits, doesn't dog into your eagle supply, can be called in during an eagle strike. makes it kinda nice for killing a quick spawn point when you otherwise arnt free to kill it with normal wrappings and you don't waste a wave killing air strike on it.
Turrets are a big liability. more viable if you have the 100 second reduction upgrade, otherwise really only got defense missions. Direct fire on red tend to run out of ammo very fast