Jaypee vs. ATS: Noida investment - Which is better?

I'm looking to invest in Noida. Jaypee and ATS are options. Which builder offers better ROI currently? Kya aap logon ko pata hai about their project delivery timelines? Has anyone experienced delays with either? Mujhe advice chahiye on which one's better for long-term appreciation. What's your take on their construction quality?