Noida Sector 151 investment - good idea?

Hi everyone, I'm thinking of investing in property in Noida, specifically Sector 151. Kya aap logon ko pata hai about the appreciation potential there? I've heard mixed reviews. Also, I'm considering ACC Builders. Has anyone here invested in their projects? What's your experience? I'm also trying to figure out if it's a good time to buy, or should I wait for a market correction? Mujhe advice chahiye on the rental yield potential in that area. What do you think? Which is better, under-construction or ready-to-move in? Is it worth the risk to invest now? Any suggestions?