If you were surprising a female with a watch and had decided on a Longines and knew they loved the Prima Luna and Dolce Vita how do you pick between them?
Likewise, had to Google them but I prefer the Dolce Vita, in particular with the metal strap, but that is probably because it's similar to my own Cartier Panthere.
They're two very different watches - in terms of shape and strap / bracelet. Strangers on the internet are not going to be able to say which watch a stranger would prefer! Just ask which they prefer so you buy the right one.