Upcoming projects: What builders don't tell you about delivery

My lease ends in 3 months, and I'm honestly tired of my 2BHK in Sector 49. Thinking of upgrading to a 3BHK or even a small villa, loan pre-approved. Golden Valley in Sohna looks good on paper, but upcoming projects always look good, right? Everyone talks about the future potential, but nobody addresses the delivery reality. I'm worried about project delays and the final quality. Builder promises are one thing, actual handover is another. Will the carpet area be what they showed? Kya builders time pe possession denge, ya it's just another long wait? I’ve heard stories about hidden costs and quality issues post-possession. Is the price jump worth the headache of an upcoming project? I'm skeptical. Change my mind.