First of all, there’s a wide variety of both economy and luxury rentals in Jeju Airport (CJU-Jeju Intl.). What you end up going with is largely dependent on what you’re willing to spend as well as what you plan to do. Specialty vehicles offer the best in mod cons and comfort. If you want to indulge yourself, why not pick up an elite SUV, or perhaps an upmarket medium-sized vehicle? Alternatively, if you just need something to get you around town at the cheapest price possible, you’re better off choosing an economy vehicle (or something else that won’t blow your budget).