There was a thread on here last fall I think it was, about the same thing, My experience is Oxycontin, Oxycodone, Morphine, makes me sick and feel really weird, I have severe insomnia and no matter how long I try to lay there and sleep, I can't. It won't let me, my mind goes a mile a minute, even running off track and making me feel like I was goin' crazy.
However the Lortabs work Great for me. I sleep like a baby with no pain.
The Thread I mentioned, and I am sure alot of us on here remember it, 90% of us has terrible symptoms from the Oxy and Great relief and rest on the Lortab.
Good Luck with your decision. If I were in your shoes, I would drop the Oxy first and see for yourself.
The best of luck to you,