I, in my ignorance of a first visit, tried to post this in an archived thread. I'd still like to but it may seem somewhat "out of place...sorry...:-(
I am not bragging but my two cents worth on the MS vs
OXY is this. (BTW: I had a botched surgery of c2,5&6 20 years ago, pain is my constant companion, but thank the Lord I'm mobile in all ways.
In any case if you fire them up there is not much difference....