What is better being a magistrate or being a sub-lieutenet in Indian navy through NDA or CDS?

I was going to have my B. Sci degree from this year and give NDA paper side-wise but my uncle said that by pursuing B. A. LL.B. apply for judiciary paper after it I can be magistrate(judge). So i am left confused with what to do? Which one is better? And which job has more salary, respect and dignity?