How reliable are Greater Noida builders for NRIs?

Did some serious online research this past weekend for flats in Greater Noida, especially around Noida Extension and Sector 150. I'm based in Dubai, so site visits are tough, yaar. My main worry is project delays and construction quality. Pura investment phans na jaaye, you know? I've been looking at Godrej, ATS, and Gaursons projects. Builder ka track record on delivery kitna real hai? Like, ATS ka construction quality sab bolte hain achha hai, but do they deliver on time? Aur Godrej ka customer support kaisa hai after booking? I need someone reliable since I can't be there to chase them. Has anyone here had issues with promised amenities not being delivered, especially in projects near Jewar Airport? Ya hidden charges last minute for things like PLC or maintenance deposits? I need to know the ground reality before signing anything. Kya koi reliable property manager bhi recommend kar sakte ho for an NRI?