I do not collect families at least any more.
My interest with Spyderco sparked when I learned about Kopa. I decided that I will collect entire set. And I did. But there were couple variants, when I really had hard time to spent money on. After that I decided to buy only knives, which I really love or at least like. There are too many knives and not enough money. I love my Persians, but I didn't buy any Persians2. I love my Calys, but not a fan of carbon steel or laminated blades, so I skipped those. and so on...........
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
My top choices Natives5, Calys, C83 Persian,Hungarian, Memory