Does your s/o love it? I’m not sure I would like enhanced; but that’s me! I am also into natural fancy diamonds now, which mean colored diamonds. I also like unusual cuts like were mentioned above, such as rose, cushion, shield; but I dislike pear shapes. I have more marquise than anything because they look so big. I am not into “perfect” diamonds because it might as well be fake. If I see a tiny feather, most people cannot see it, and it does bring the price down. And no one can ever switch it because I would immediately know. I had a friend who had hers switched and she could not prove it. I like my diamonds BIG. No carbon (black marks) that are obvious. I would say that she needs to love it as long as you are fine with it. You want her to want to wear it no matter what. If she is not as specific and selective as me, no problem; but if she is, I would consult her completely.
My s-i-l wanted a diamond my brother loved. She had already told him what kind of design she wanted. He brought me with him and I tried to be as objective as possible so it was his decision. He loved the natural diamond canary. Needless to say, she was in love with it too.
Platinum is the most expensive, long-lasting setting. I prefer 18ct gold. I could talk about diamonds on and on. Best of luck and joy with it!!!