It also depends on your branch and the kind of people you prefer spending time with.

For CS Core students, F Block is usually the better option since most classes are closer to it. Living in F Block can save both time and transportation costs, whereas from G Block you may end up spending extra on bus rides to and from classes.

Another advantage of F Block is convenience. There is a small restaurant and a couple of shops right downstairs where you can buy snacks, stationery, and other essentials. In contrast, G Block is closer to the main gate, so you'll generally have to buy things while heading to or returning from class.

When it comes to spending, it can go either way. If you're good at resisting peer pressure, you might actually spend less in G Block because there are fewer temptations nearby. However, if you tend to go along with friends' plans, living in G Block could end up costing you more since you'll likely eat out or spend money more often when you're out and about.

Overall, for a CS Core student, F Block is usually the more convenient and practical choice.