Those appear to be nice koi stan, the pics don't have enough resolution (maybe it's my puter) to really see the beni or kiwa in any detail, although the color and pattern, if accurately depicted, appear very nice to me.
I have never heard of that dealer, do they have a site?
JR your points are valid, but I also think color and beni discussion can be done without knowing male female etc, I would enjoy hearing you say more about the male female differences and issues.
Dinh and aquitori are sharp as usual.