Noida Extension possession delays are a total nightmare.

I work in real estate, but buying my own flat, yaar, it's a different ballgame. I'm checking out Jalvayu Tower and Spark Divine. Both look decent on paper, but the real question is builder ka trust factor. Jalvayu ka price range high hai, but is their possession timeline reliable? Heard some horror stories about hidden charges and last-minute PLCs with similar projects. Spark Divine mein bhi same concern hai, delivery dates aur actual handover mein kitna gap hota hai? I know builders promise the moon, but then registry ke time extra costs aate hain. Has anyone dealt with either of these builders directly? What's the *actual* total cost of ownership after all the stamp duty, registration, and unexpected charges? Don't want another 2-year delay drama.