Firstly, I dont doubt for a second that the paper isnt biased, however redline mt-90 is considered by many to be one of the better oils available for these cars, both locally and by the much larger US MS3 community.
I dont really drive my car that hard, mostly Im driving to and fro work in traffic, although I do have a TWM short shifter + bushings, which may exaggerate the feedback from the gearbox in any case.
My biggest concern in the rather long winded paper is the corrosion factor of the RP over most others, this is the area thats going to damage those brass synchros over extended use.
At the end of the day, if it works for you, and removes the woonging noise you may as well stick with it, I am curious though to see how you find your first few shifts on those cold winter mornings.
Nearly all men can stand adversity. But if you want to test a man's character - give him power.
Abraham Lincoln