The real infra impact on Investment Hotspots

Two years ago I'd have laughed at these prices, honestly. I work in real estate, but buying for myself in New Delhi is a whole different ball game. Especially in Investment Hotspots, after all the new metro and road infra, prices have shot up. Which specific pockets within Investment Hotspots saw the biggest real jump due to these developments? Builders toh kuch bhi bolte hain, but what's the off-the-record ground reality for ROI?