Not another "Which oil is best" thread . . .
I also would like to know the answer to that question.
However . . .
The problem is that very few of us have the time, sleds, or money to conduct a fair and un-biased comparison of any significant number of products under even slightly controlled circumstances. Unfortunately, all we can do is try a few different oils over the course of several years, and usually across different sleds. We each form our opinions based upon this quite limited "test". Each of us usually find one that seems to work good, and is within our budget, and then we stick with it. After that we defend our choice, whatever it is, quite fiercly.