Hmm, I think I like the body best on your almost sumi spot kid. Of all of them, that would likely be the keeper for me. I am not a fan of Menkaburi patterns especially on Kohaku and Sanke. Showa can pull it off sometimes but it's still not ideal. I know they are not considered desirable in Japan as it's a less refined beni pattern and considered something of a throwback, pattern-wise.
http://www.coloradokoi.com/kohaku.htm
Btw, I should also add that the ones that have the hooded beni pattern also have the lesser head conformation IMO.