Under-construction is a sucker's game in Noida, change my mind

I'm based in Dubai, looking at Noida for investment. Honestly not sure about under-construction projects anymore. Earth Towne looks tempting price-wise, starting at ₹20.25 L, but the possession timeline scares me. Heard horror stories of delays. Elixir Windz is ready to move, and that peace of mind has value, even if it's pricier (₹51.69 L onwards). Carpet area is crucial, though. Anyone compared how much usable space you actually get in Earth Towne vs. Elixir Windz? I can't do a site inspection myself right now. Also, what about rental potential? Which would attract better tenants and higher rent? Need a property manager, but don't want to deal with constant vacancies. Has anyone else faced this dilemma?