the only headlights issue ive ever had is for a period of time, when i had my brights on and turned my turn signal on, my lights would cut out completely. That actually went away on its own though. I'm assuming it was a wiring problem.
but i'm going to have to agree with cobalt123. i looked into trifecta and it looks pretty nice. for 07 cobalts its looking like about $250 from what i can see