County Group in Sector 1: Good ROI?

I'm considering investing in County Group projects in Sector 1. What's the expected appreciation in the next 3-5 years? Has anyone here invested in their properties? What's your experience been like? Also, what are the risks involved in investing in under-construction properties right now? Is it better to wait for ready-to-move options? Mujhe advice chahiye! Kya aap logon ko pata hai?