Hey,
Every course after MBBS has its own advantages and benefits. You can go for any of them according to the life you want to live. If you want to continue practicing medicine for your whole life, you can go with MD. Eitherwise you can go for management courses if you don't want to go for routine practise. Or likewise research. Competetion is more or less same everywhere so I suggest you use your interest as the major criteria.
Goodluck.
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