With a multitude of rubs to try, I assume you wish to be objective in sampling the rubs.
I would suggest that you record notes as you use them, simply because you won't be able to remember the good points and the bad points of each rub. To compound the matter, each rub will taste differently on different types of meats. A rub used on ribs will taste differently on a loin or even a shoulder. Size, preparation, and texture also effects how we perceive flavor. A large butt pulled or chopped will help to dilute the overall flavors as it is mixed after pulling or chopping, whereas ribs, which are thinner in nature, will have a surface coating that will remain intact.
I think we are all anxious to see what your thought and findings are compared to our personal likes. But we are all individuals, and have different preferences in taste. Something I like may not be as well received by others, and something someone else likes, may not be well received by others as well. It will never be about which rub is the best, but merely which one captures our individual likes in flavor.
If we all had the same taste and likes in flavor, we would only need one rub on the shelves.
Keep us up to date on your journey through the multitude of flavors.
.