Translation:You are the most beautiful among women.
Yeah…the romanian language does have some pretty cheesy lines, which I personally don't like to be honest. I prefer to hear original things coming from the heart. :)
I will not speak for the rest of the Romanian women, I think there are women who share my opinion but also women who actually may like such lines. xD
They are interchangeable. "Între" comes from the latin inter. "Printre= pre + între" and "dintre= de + între". If între and printre can be used to find something specific among others (a flute among dresses), dintre is used to pick a special something among equals (most beautiful among women).