1. "خوبه" (khoob-eh): This is the most common and versatile way to say "sounds good," and it literally translates to "good." You can use it in most situations where you would say "sounds good" in English.
2. "خوبه، موافقم" (khoob-eh, movafeghe-m): This is a more emphatic way to say "sounds good," literally meaning "good, I agree." It is used when you want to express your agreement more strongly, or when you need to emphasize that you're on board with the suggestion.
Both of these options are grammatically correct and commonly used in Farsi. Choose the one that best fits the situation and your level of enthusiasm.