Under-construction property is too risky in Noida right now

Has anyone actually seen Parsvnath Developers complete projects on time? I'm thinking of investing in Sector 19, but only if it's ready to move. Under-construction feels too risky, especially after hearing so many horror stories. Kya kisi ko pata hai, how much can I realistically expect rental yield to be in Sector 19? I've heard some crazy numbers, but I want to know the real picture. Should I just stick to ready-to-move flats even if the price is higher? Is it worth paying extra for peace of mind? Honestly not sure if the potential higher ROI of under-construction is worth the headache. I've seen this pattern before, where delays eat up all the potential gains.