I'm already on 400mg seroquel XR and 200mg seroquel regular plus 6mg prazosin for nightmares at bedtime. Had a sleep study recently which suggested chronic insomnia but I'm hesitant to start something more for sleep. My seroquel used to be super sedating and helped my sleep a lot but I guess I've gotten used to it since it's been over a year. 
My psych offered/suggested Zopiclone, I would love to know what peoples experiences on it are like. Thanks!