Timely delivery in Noida Extension is a myth, change my mind.

Did a site visit to a few projects in Noida Extension this weekend, like Gaurs and ATS. Brochures look great, but I'm worried about real construction quality and possession delays. My parents keep saying to check society maintenance years after possession. Does anyone have experience with Godrej Properties or Gulshan Homz for timely delivery or hidden charges? Is the hype around ATS justified for quality? Ab samajh nahi aa raha kaunsa builder better hai for a 2BHK around ₹80L near Char Murti. Need genuine opinions.