Construction-linked payment plans are a trap, not a benefit

Are construction-linked payment plans actually a trap rather than a benefit for investors? I'm currently in a 2BHK in Sector 71, looking to upgrade to a 3BHK or a small villa around Noida Extension or Yamuna Expressway. My budget is around ₹1.5-2 Cr. Builders like Max Estates ya Gaursons mostly push CLPs. I'm thinking a higher upfront payment might give better negotiation power, perhaps even for a spot discount. Brokers always lean towards CLPs, not sure if that's for their commission structure. Should I push for a down payment plan instead? And for maximizing ROI, is the secondary market a better bet right now for underpriced assets, especially with Jewar Airport infra building up? What's the real scene for value hunting?