Which TEFL course should I take?

I want to teach English in Korea but the job market there is really saturated at this point. I've decided to take a TEFL course online but I don't know which one to choose. I can get a TEFL certificate with is 40 - 60 hrs of training or I can get a TEFL diploma which is 100-120 hrs of training. Any suggestions? show more I want to teach English in Korea but the job market there is really saturated at this point. I've decided to take a TEFL course online but I don't know which one to choose. I can get a TEFL certificate with is 40 - 60 hrs of training or I can get a TEFL diploma which is 100-120 hrs of training. Any suggestions?
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