hello all. i have been on 120mg oxy twice a day and 6 15mg roxy 6 times a day. i have pretty much become immune to it so my doc switched my to 100mg ms er twice a day and 6 30mg ms ir a day. my question is are the 30mg irs as good as a 15mg roxy? i loved the euphoric feel of the roxy when they worked so im wondering if i will get the same from ms ir. i have chronic back pain so thats the real reason i take them but the overall feeling good is a bonus