I would definitely suggest getting decants of both fragrances and try them for yourself. They are both quite expensive and you should make sure they are what you are looking for. I didn't find either one particularily long lasting. If I had to pick between the two I'd buy Love in White, only because there was something in the Aqua Fiorentina that I wasn't fond of and I don't know what it was. Many people seem to like it though, maybe I had a bad sample. It's been a while since I've tried either of them. I think it's great that you want to give your girlfriend something special!! I hope you find what you are looking for.