Ready to move in Noida? Is it always better?

Kids have moved out, so I'm selling the big house. Gaurs Platinum Towers looks fancy but 8+ Cr? Thoda zyada hai for someone my age. Presidency Presithum is ready to move. Big plus. But builder reputation? Not sure. Everyone glorifies ready possession, but maintenance charges kitna hoga? And resale value after 5 years? Honestly not sure which way to go. Change my mind.