Japan. I taught in Japan for 6 years. Japanese students listen very well and don't have any discipline issues. They are polite and want to learn. They "Pay" well in Japan. Check out the email list, ohayosensei for teaching jobs in Japan. It's the best "insiders" resource on teaching jobs in Japan.
See my Hub: Tutor ESL to Make Money. I include info from my recently published book. My website has free chapters from my book too. www.esltutorguide.com
The book I wrote on how to teach ESL is called, "Get Them Talking! The Complete Guide to ESL Tutoring". I taught ESL for 25 years. You can read about it at my website www.esltutorguide.com.
What I liked most about teaching in Japan were the people. They're not prejudiced. And Tokyo is SO-O-O International.
On New Year's Eve in 1996 my husband and I went to the Blue Note in Tokyo. After the jazz concert and dinner we walked around the neighborhood. We noticed some African people in native dress mulling around an area so we went over there. They were having an African wedding in an chapel. The doors were wide open and people were spilling out. They were singing some kind of hymns or chanting. We sat nearby at an outdoor cafe with one of those cafe tables that have the propane burners in it to keep your legs and feet warm. We had a blanket over our knees and were drinking lattes. It was so romantic ! Such a treat!
The best New Year's Eve of my lIfe!