Love the Chill so much I got two of them. One in the pocket right now, has been for 4 years. Less than 2 ounces, less than 1/4" thick, full skeletonized liners, under $20. What's not to like?
I would like to get a custom one with better steel the same size, (perhaps a slightly stronger detent) no matter the cost.
What you need is the ZT 0600. Dont know about the size difference though.