We get asked this every week, usually by someone starting a first job. The honest answer is that it comes down to whether you own a two-wheeler.
Jagatpura
Newer stock, larger flats for the money, and a genuinely quiet evening. But you will drive for most things, and auto fares add up faster than people budget for.
Mansarovar
More expensive per square foot and older buildings, but you can walk to a market, a gym and a chemist. If you do not have a vehicle, that difference is worth more than the extra 200 sq ft.
Rent is not the only cost. Add your monthly commute before you compare two areas.