I love my jnats!
Synthetics, once you learned how to use them they're easy to use, fast and gives a good edge but somehow boring.
Jnats can always give you a challenge and the combinations base stone - nagura is almost endless.
It's easier when you got a few Jnats to buy more of them, old unmarked stones you can get fairly cheap and just fit them in your system by grit and performance.
But if you go for your first stone and you want it to be a razor finisher, you better pay up and go with a trusted seller.