I can't comment on oxazepam since I have never taken it. Xanax on the other hand has been very helpful for me when I have needed it. It is short acting and gets into your system quickly. I would go with clonazapam if I could. It is slow acting and stays in your system for a lot longer than xanax so you don't get the swings when the xanax wears off. It just doesn't work for me personally.