General, positive:
* Magnifique: This is the most common and straightforward translation, meaning "magnificent" or "splendid."
* Merveilleux: This translates to "marvelous" or "wonderful" and implies something exceptional or amazing.
* Extraordinaire: This translates to "extraordinary" and suggests something truly remarkable or unusual.
For a specific situation:
* Superbe: This translates to "superb" and is a good choice for expressing a positive emotion about something beautiful or impressive.
* Fantastique: This translates to "fantastic" and is good for expressing joy, excitement, or amazement.
* Génial: This translates to "brilliant" or "awesome" and is more informal, often used by younger generations.
The best choice for your translation will depend on the specific context and tone you wish to convey.