Which is the best place to live (and work) in South Korea

Which is the best place to live (and work) in South Korea?
I live in South Africa, but I'm planning to go and teach English in S. Korea in a couple of weeks. The application forms ask me where I want to live... First of all- what is the difference between a regular province and a city province? And secondly - which would be the best place to go? please give honest opinions... No stupid jokes.
Korea - 4 Answers
Random Answers, Critics, Comments, Opinions :
1 :
Seoul probably is the best option but I do not know where is the best region in Seoul. Seoul is divided into 25 gu (구; 區) (district). Dobong District (도봉구; 道峰區) Dongdaemun District (동대문구; 東大門區) Dongjak District (동작구; 銅雀區) Eunpyeong District (은평구; 恩平區) Gangbuk District (강북구; 江北區) Gangdong District (강동구; 江東區) Gangnam District (강남구; 江南區) Gangseo District (강서구; 江西區) Geumcheon District (금천구; 衿川區) Guro District (구로구; 九老區) Gwanak District (관악구; 冠岳區) Gwangjin District (광진구; 廣津區) Jongno District (종로구; 鍾路區) Jung District (중구; 中區) Jungnang District (중랑구; 中浪區) Mapo District (마포구; 麻浦區) Nowon District (노원구; 蘆原區) Seocho District (서초구; 瑞草區) Seodaemun District (서대문구; 西大門區) Seongbuk District (성북구; 城北區) Seongdong District (성동구; 城東區) Songpa District (송파구; 松坡區) Yangcheon District (양천구; 陽川區) Yeongdeungpo District (영등포구; 永登浦區) Yongsan District (용산구; 龍山區) Gangnam and Gangnam-gu districts are the modern and uptown areas of the city, where you can find many hotels and tourist facilities. The Jongno-gu district is the historical core of the city, containing most of Seoul’s historical sights. A few other notable districts are the international district of Itaewon and the Dongdaemun-gu, a true shoppers paradise. You can visit the traditional market areas of Namdaemun or Dongdaemun, where you can buy low-priced clothing, souvenirs and nearly everything else you might want. Next to these markets, the city has countless shopping malls all over town, as fashion is part of the city’s culture. Myeongdong is one of the best-known and largest areas for fashion shopping, as well as Apgujeong, the area which is known as the ‘Beverly Hills of Seoul’, with many stores of luxurious international brands. Second option Busan Metropolitan City, also known as Pusan is the largest port city in South Korea and the fifth largest port in the world. Busan has a population of about 3.6 million. It is South Korea's second largest metropolis, after Seoul. Third option Incheon, officially the Incheon Metropolitan City, is South Korea's third largest metropolis, after Seoul and Busan.
2 :
We lived in Gangnam and have nice apartment in Apkujong, which pretty much means that you're a millionaire. So try to get a job in Gangnam.
3 :
seoul
4 :
Busan. I've lived in Seoul and Busan. I think Busan is the best place to live for the following reasons: 1) It's not a crowded as Seoul (4 million vs 12 million) 2) Lower cost of living 3) Beaches 4) Milder climate 5) Friendlier people (in Seoul they can be a bit standoffish) I think a lot of people will probably tell you Seoul, especially people who have visited but never lived there. Maybe because it's the largest city or has the best nightlife, but in reality the nightlife is just as good in Busan and you won't waste hours of time each week in crowded subways or traffic jams. Seoul's a great city to visit. It's only a 3 hour ride on KTX to get there from Busan. But after living in Busan, I could never live in Seoul again.