I think pussies always look better shaved smooth, but some hair can be acceptable providing it's trimmed.
For instance, in that second picture, the hair around her pussy looks good, but the hair on top (closest to her belly) is much too long and not attractive to the eye.
However, in the next picture where she is showing from behind, I love that you can see much more detail of her pussy, especially her lips.
And the feeling of sliding hands and fingers all over it is mesmerizing!
Do you have to choose one as an absolute? One summer long ago, my ex shaved her pussy for the summer, and it was still shaved when she went off to school that fall. A (younger) fellow student made a cuckold of me in the first week of classes! (And continued to cuckold me as she grew her bush back.) But a shaved pussy was rare then, and she usually had either a full bush, or what she called "all trimmed down" (she was Italian). And I got cuckolded by guys both those ways, too. So I say, encourage your wife to alternate. You can keep a log of how many guys take her one way or the other. A real scientific test.