Floor-rise premium is pure builder profit, not investment.

Palam Vihar keeps coming up every time I shortlist something for investment. I'm looking at a 3BHK, maybe around ₹1.5 Cr, but honestly not sure if new projects or resale flats are better right now. For new, builders like MRG Group offer different floor-rise premiums. Is paying extra for a higher floor really worth it for potential ROI, or just a waste? Also, for secondary market deals, can you actually negotiate more on the price compared to direct builder sales? My friend just got a new flat and felt like he couldn't budge the price much. What's been people's experience with negotiation in resale in Gurugram? Any advice on spotting good value in the secondary market vs. new launches?