I’m not all that familiar with those items, and have never used anything but the usual pain killers for occasional cramps that i get, but, i’ll be in favour of whichever one is the friendliest to the body. I’d also say that a possible addiction (for opiate) is better in the long run that liver and kidney damage – i’m sure one can avoid an addiction when used for short term pains. (are they used for short terms pain?). I don’t care whether one is illegal or not, if it’s healthier for the body to use it, i’ll find it and use it.