Guerlain has a lot of classics like jicky, mitsouko, samsara, shalimar etc. A fragrance house with a very rich history.
If one has plenty of dough to spend, one should try their niche range, like tonka imperiale, spiriteuese double vanille, bois d'armanie. Marvelous house
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The only other good designer houses are Chanel, Dior and Hermes. Rest, frankly are not up to the mark (with exceptions of course)
Of course I'm not including any of the brilliant niche houses, since they're not available in India anyway. We're left with no option other than these designer houses

Anyhow, sorry I got carried away. Didnt intend to steer away from the topic