I've been on just about everything, Trazodone, Rozeram, Ambien, Lunesta, Clonazapam, seroquel, etc.

Some helped more than others, I really got to sleep quick with seroquel but it gave me vivid crazy dreams. I've recently been put on Temazepam. It helps me fall asleep but it doesn't help me stay asleep all night.
One doc told me to buy melantonin from the store. Haven't tried that yet though.
I really like using aromatherapy to relax. Also drinking hot decaff tea b4 bed. I know what it feels like when lack of sleep wrecks havoc on your body and mind.
Mild exercise and stretching earlier in the day tends to help me fall asleep better at night.
Hope you find something that works for you.