Janitor Missile Array (Apocalypse)
While the general consensus is to avoid weapons that require reloading since ammunition can be expensive, it's important to note that the Janitor missile array's performance is a good balance to the cost of its missiles. At the beginning, you can mount one of these missile arrays on each of your hovercars to give them a good offensive punch against the smaller craft. However, as the game progresses and the alien ships get larger, you're better off upgrading to something with more punch.