Which Noida builder offers better after-sales?

I'm looking to buy a property in Noida. I've shortlisted a few projects from different builders. What do you think about the after-sales service of different builders here? Has anyone experienced issues with maintenance or complaint resolution? Which builder is better in terms of responsiveness and post-possession support? Also, kya aap logon ko pata hai about which builder offers better ROI potential for investment in Noida currently? My budget is around 80L. Mujhe advice chahiye. Which one would you recommend based on your experiences? Not sure if investment in Noida is worth it. Is it a good time to buy? What's your take?