Greater Noida: Ready-to-move vs Upcoming for future value?

₹81.42 lakh for a 2BHK in Gardenia AIMS MAX Gardenia Glory. Ready-to-move hai, toh possession ka tension nahi. But Swaraj Homes Overseas Towers upcoming hai at ₹1.06 Cr. Total cost of ownership, like stamp duty and maintenance, kitna differ karega? 5-year appreciation ke liye which is better? Confused.