Munnar will be the best option to pick. You can find many waterfalls on the way and roads covered with nature. You can visit Top Point for some peace and obviously have some tea while learning the procedure of making tea.
One important attraction of Ooty is the mountain train, while Munnar doesn't have anything like that to boast of. Ooty is a better town and provides better facilities compared to Munnar. The nearest rail head for Munnar is Alwaye / Angamaly and is around 110KM away. Cochin is the nearest airport to Munnar, while Coimbatore is the one for Ooty.
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