ATS Group projects often miss delivery deadlines

Visited a few projects by Gaurs and ATS last weekend in Noida Extension. Honestly, Gaurs ka construction quality dekh ke thoda confused hu. They promise on-time delivery, but reviews are mixed. ATS projects look premium, but suna hai delivery delays hote hain. Kya kisi ko in builders ke saath experience hai? Especially about actual possession dates versus what they committed. Aur construction quality after 2-3 years, does it hold up for them? My budget is around ₹90L for a 2BHK. Ab samajh nahi aa raha kispe trust karu.