Givenchy L'Interdit Intense vs YSL Libre Intense

I have finally smelled YSL Libre Intense and enjoyed my sample to the very last drop. Many people say that the first impression is very important. From my experience, it can be anything, and I wouldn't bet on it, but it certainly gives away some truth about the perfume. When I smelled this fragrance for the very first time, I immediately thought, "I smelled this just recently!' It was Givenchy L'I...