Currently, I support first come, first served. Every time it's a two-phase process; high scores are unattainable, and low scores are practically impossible to grab. First come, first served can at least secure 2/3. Initially, when the rules weren't changed, those who boosted their scores were almost outpaced by these people. In my first 15 days with a score of 255, I only managed to grab 2, which was extremely frustrating. They deliberately avoided claiming rewards and intentionally inflated their scores. Now I can finally deal with these people.