Noida Extension: Your experience buying smaller flats?

Selling our big home is proving tough, even with the market picking up. Kids are gone, so I'm eyeing a compact, low-maintenance 2BHK in Noida Extension. Is ready-to-move truly safer now, given all the delay stories? What about sectors like 107 or 150 for hospital access? Any experiences with Godrej or ATS post-possession?