If given the option to choose between Delhi and Mumbai, where should i begin my career? Not a T1 firm. Basic salary. I only want to know the difference in terms of growth opportunities and ability to shift to bigger firms. If i start in delhi offices can i move to Mumbai firms after a few years?

In corporate law, switching cities will not be much of a problem at any point in your career. However, if not a T1, select Delhi to live a decent life since the cost of living is much less. Living a decent life and having some savings, also translates to better productivity at work and confidence (which is a huge part of everything and anything).