As the title states I have a few ZT's, to be exact I have a 550, 551, 560, and a 561. I also have a 566 on pre-order. So I've decided that I need a few Kershaw knives to toss into the rotation. I like the knockout, and the thermite is another Hinderer design for the collection. On the other hand does a Kershaw collection need to begin with a skyline? a blur? What does everyone think? How does one start a Kershaw collection?