Put yourself in the buyers shoes. Which sinerio would impress you the most?
We have had hardwood floors for a long time and repaired and refinished their surfaces. Refinishing these floors can make them look like new. Our suggestion is to get a flooring professional(someone that does refinishing) to get their opinon on the best course of action for you.
But the bottom line is, there is real importance in making your home look its best. Keeping this in mind will help you accomplish what you are tryin to accomplish.