Gravity Well and Attack Pattern Omega. You can get the weakest versions at Lt. Cmdr level and the strongest at Cmdr level. Attack pattern Beta is also good at Lt. Cmdr, but Omega generally does more for you. Cannon Rapid Fire and Scatter Volley are also good in you're using a cannon build.
Originally Posted by voporak
So yes... you could get everything here for free.
Just like you can get a free steak dinner by collecting dropped pennies in the parking lot.