For a brief Halo comparison, Stingbees are machine gun ammo which chase enemies like the needles from a needler.
Boombats stick to enemies like plasma grenades. Zappflies are somewhat like the plasma pistol.
For a quick list of the Live Ammo, with the info it includes in the game when you go to choose them, you can go
here.
I also posted some of this post in another topic by accident
