Grey Vetiver is my recommendation. It's very versatile, great scent, works in both casual and professional scenario, daytime, nighttime, etc. It's one of those fragrances you can just spray on when you don't want to think what scent would go with the outfit or occasion - it just works.
Another one that also works the same way is Terre d'Hermes. EDT is slightly brighter, Pure Parfum is softer and more woodsy. Both last about the same (8+ hours). I use this one and Grey Vetiver a lot, these are "no brainer" choices in the morning.