While I love the chevron pattern the best, I don't love the shape of the Flap. It is a bit less structured' than a classic flap and that is the reason. I think you should get a chevron boy in black! That covers the best of both bags.
The chevron looks unique, if it's seasonal I would think to get that, since it may or may not come back. But on the flip side, boys are going up in price for cruise so this makes it tougher. Hmmmmmm it also depends what you have already in your collection. Like if you always wanted a boy and never bought it, then go get the boy..... Sorry I'm not much help. But I think ultimately I would go for the boy..... Even tho I love the chevron on the flap too.
I am leaning towards the Chevron, the interior of the bag is leather and it is priced comparable to the Chanel boy. They size in between the m/l classic and the jumbo is $4000. I just need to see it in person.