i have very bad back. was taking oxycontin 40 mg er 3xs aday 4 10/325 percerets or the breakthrough. it was change due to cost now taking ms contin 60 mg 3xs aday aone with the percerets. what would make a better breakthrough med. seems like the percerets do not work as well the ms is great does not miss with my head but handles the pain . was at 6-7 on pain scale now at 3-4. thanks or ya'lls help