Which method...

Which method you think is the most effective for foreign language teaching?
- Grammar Translation method (focus on reading and writing, grammar rules, vocabulary, use of the native language as a medium of instruction)
- Direct/ Series method (teaching directly in the target language, grammar and vocab are taught orally, listening and imitation)
- Audio-lingual method (material taught through dialogues, memicry, no grammatical explanation, it relies heavily on first language acquisition principles)
- other methods, may be