Which one of these Diamonds is a better choice for me.?

why dont you go for a smaller diamond that you can get a better cut, color and clarity. They are both really big, but neither one has good clarity or color. Color starts at d and goes down, and i would suggest trying to get a higher color than G or H. As a woman, i would prefer a nicer diamond. Same thing with the clarity. SI is not very good at all. A two carot diamond that has these ratings will not sparkle like one with a better clarity rating. Get her a 1 and a half carot and get her a flawless diamond, since obviously you can afford it. She will be more impressed by that, than by a bigger ring that is not a good quality.