Honestly, if a 6k is alright and you're wondering if there's more-- the cheapest (most certain) way to nip this in the bud before it spirals out of control would be to buy a Gokumyo 20k and hopefully be done with it. Just keep telling yourself that's as good it gets and never borrow a Jnat. Utopian even did a demonstration video of setting a bevel on it. There's not a synthetic with more range that I've used.