Thanks JR, for your opinion.
Fortunatly, I have many Japanese sensei and you are one of few American sensei for me
I think that Number four has better metallic sheen and pattern is also slightly better than Number two at this size but overall number two ...also, kujyaku spots looks better on number two.
Brutuscz,
#3 looks like a Doitu Goshiki or something...
you see... there is no metallic on the body, head, nose, fins..
this pic is not exactly Doitu kujyaku ( she was a Kin kikokuryu before) but something like that...