That may depend on where you are thinking. I've had some really great RCI exchanges, but I'm using non-DVC timeshares that are much less expensive, so my definition of "good option" might be easier to meet.
Based on your subject title, it's also worth pointing out that RCI is available to
any DVC owner, whether resale-only or not. However, some other options---a
Disney Cruise, the Disney Collection, etc.---can only be booked using points acquired directly from Disney.