Hello and welcome to Basenotes, Rompip!
Glad to have with us thinking over scents. I moved your post over here to the Just Starting Out board because it fits better with things discussed over here.
There are plenty of houses that members find prestigious, of course, when any scent lights fire in people's noses they think that alone makes the house prestigious.
YSL has a huge fan base here, I'm very happy with products by Givenchy, Dior, and Molinard besides a whole list of Niche houses.
Again, welcome to the site and I hope you enjoy everything you read!