You need to be fluent in both.
The layout of some circuits will lend itself to one method,
the layout of other circuits will lend itself to the other method.
When you have worked enough homework problems it will become intuitive by looking at the circuit which method will be quicker.
You should practice by solving a lot circuits twice, once by each method to build your skill.
At first you'll probably get different answers because of beginner's awkwardness - keep at it until that no longer happens.
Then you're becoming competent at the craft .
I prefer node-voltage, but I am also learning and using mesh current. Advances books in microelectronics refer to both of them, so it is important to become comfortable with both. It just takes practice.