Of course you’re going to get the new owner, dealers of new Koestu, and (probably) publishers singing their praises. Then you’ll probably have a few dealers of OTHER brands saying they’re no good. None of that is meaningful information.
What you need is non-industry hobbyists with experience in Koetsu to try the new ones. But good luck - the new prices are higher and the old HUGE price breaks (like 50 - 70% off of USA retail, buying from Singapore) are probably long gone. So the effective price is MUCH higher.
$8K for a Rosewood Sig (non-platinum) :(
I got a brand new Coralstone Platinum for $4800 circa 2018.

