Tricky one here what is the best koi you have every seen.
For me it was a yellow Ohgon at 2003 national uk 97cm
it was a rich yellow with like a gold net throne over it
the scales where edged in like a gold brade every one perfect.
Never seen anything like it.
Hard to say.. I been to secret greenhouses in Niigata. So you are right.. That is tough..
I know the best koi I have bowled and let get away was a Kumonryu from Isa Maruyo.. I look back at it now.. and I should have had that baby in my pond now..