There are lots of things in life where you can clearly state what is “best”: in class, whoever scored highest on the test is the best student. In soccer, whoever won the World Cup is the best team. There are enough of them, in fact, that we frequently forget how many things in life cannot be clearly defined to be “best”.
Most pertinently, “best” can almost never be determined in business. When I was in college, “best” to me meant cheapest. When I graduated and got a “real job”, I was able to afford more expense, and “best” included durability and quality and price per unit (Now that my graduate student loans are coming due, “best” may go back to meaning cheapest.) If you’re handling neurotoxins, “best” means “safest”. There are lots of ways to define best, which means there are lots of ways to be the best.
If you can’t be the cheapest, can you be the fastest? If you can’t be the most insightful writer, can you be the funniest? Use what you do best.