Greater Noida builders: Who delivers on time and on budget?

My lease ends in 4 months and I'm fed up of renting. Landlord ne rent phir badha diya. Finally taking the plunge, EMI vs rent math ab sahi lag raha hai. Greater Noida mein 2BHK/3BHK dekh raha hoon, Noida Extension ya Yamuna Expressway side. Godrej Properties, ATS, Gaursons... inka delivery track record kaisa hai? Brochure timeline real hota hai ya bas marketing? Hidden charges ka kya scene hai? Possession pe PLC, IDC ke naam pe kitna extra charge karte hain? Sunna hai kuch builders ka customer support booking ke baad gayab ho jaata hai. Any experiences with ACE Group, Mahagun ya M3M India? Kis builder ka experience generally better raha for end-users? Koi actual feedback milega toh bohot help hogi.