Ready-to-move flats are the only safe bet in Noida tbh

Sector 89 mein Jain Builders ka project dekha. Kids have moved out, so don't need such a big place anymore. Resale karna hai old house. Under-construction mein darr lagta hai after so many horror stories. Ready-to-move hi theek hai, right? Maintenance bhi kam chahiye. Elevator hona zaroori hai. Near hospital bhi. Am I missing something, or is ready-to-move bilkul sahi choice? Has anyone else faced possession delays, or am I just paranoid?