Cold Domination - Cold domination has a variety of strong debuffs. They are not as good as radiation emission, however. This set also has a very rare maximum health buff that is quite good.
Dark Miasma - This set has good debuffs and a few powers that are almost controller like. It also has an excellent pet in the Dark Servant.
Kinetics - This is the most purely offensive based set for the controller. It drains foes of their ability to deal damage while massively buffing the controller and its team. It can also boost speed, endurance regeneration, jump height, and more.
Radiation Emission - This is the best debuffing set in the game. Radiation can debuff regeneration, defense, to-hit, and damage resistance. When you can debuff these things, Arch Villains become significantly easier. A lot of end game content practically requires a radiation emission team member.
Sonic Resonance - This set is similar to force field but the "bubbles" protect via damage resistance rather than defense. This set also provides status protection to the controller and the controller's team.
Storm Summoning - This offensive/PvP based set is popular among soloists and PvPers but it is not group friendly.
Thermal Radiation - This is the closest thing the Villain side has to the defender's Empathy/healing set. It has resistance based buffs, a very good single target offensive buff (forge), and two excellent debuffs (heat exhaustion and melt armor). The annoying part about this set is constantly having to re-apply the two resistance shields on your entire party. Also, none of the good buffs work on the corruptor itself.
Traps - This is possibly the most unique of the Corruptor sets. It is like blaster /devices re-imagined. It has some control powers as well as some Point Blank Area of Effect (PBAE) buffs.