Gurugram buyers — DLF, M3M, Godrej: delivery & quality feedback?

My lease ends in 3 months and honestly, I'm fed up of renting. EMI vs rent math finally clicked. Looking at Gurugram, Golf Course Extension ya SPR mein. DLF, M3M, Godrej ke projects dekhe hain. But their on-time delivery track record aur actual construction quality pe doubt hai. Kisi ka experience hai with post-possession issues like seepage? Aur customer support booking ke baad, they pick up calls or not?