Noida mein first time ghar, builder ne tension de di!

Sector 150 mein I'm looking at projects. Supertech aur ATS ke beech mein phasa hua hoon. Supertech ka on-time delivery track record thoda sketchy lag raha hai, right? ATS Green mein suna hai possession ke baad maintenance charges bahut zyada hain. Matlab, EMI vs rent ka kya fayda agar maintenance itna ho? Kisi ka koi experience hai? Should I reconsider? Honestly not sure which one to choose now.