I can't take benzos either i have auditory hallucinations on a very very very small dose. It puts me into such a state i end up having a panic attack so i am with you there! If you can tolerate the quetiapine maybe it just needs to be adjusted or upped, until it works. If it's not helping then switching sounds like the right thing. I know it's frustrating trying to find what works, and you probably hate the "let's try this" but it will be worth it when you find the balance, what a nice time that will be where your not too high or too low and you can just be. try to think about that day, and remind yourself that what your doing is worth finding that, even though it's frustrating.