Oh, I'm not deciding anything--I don't have a tank! But I like to dream these things out...and I've never heard of anybody with an aggressive-ish Caribbean tank, that's all.
You're right. I did some research and it does seem like the color of the Cuban hog is more consistent with age than the Spanish hog. I suppose if I had to choose between the two, then that's the one I'd go with.
I've never been a hogfish fan, but since there's so few wrasses (family Labridae) in the Caribbean that I wondered about the hogs. That's all!