I actually had and have great luck with seroquel, in combination with my AD med. I take a really small dose - half the 25mg pill about a half hour before bed and I sleep a nice 7-8 hours. I also take my AD at the same time, and the combination is great.

I have used Ambien, Ambien CR, trazadone, and one other one that I can't remember for my insomnia. The only one that worked was the Ambien CR but my insurance won't cover it.