Uday Realcon Pvt Ltd: Good Investment?

I'm thinking of investing in Noida, specifically looking at Uday Realcon Pvt Ltd. Has anyone invested with them before? What's your experience? I'm also trying to figure out the best area for investment. I've been considering Sector 3, but Noida Extension seems to have more affordable options. Which one would you recommend for long-term appreciation? What do you think about the current market conditions? Is it really a buyer's market right now? I'm also curious about expected returns. What kind of rental yield can I realistically expect in Noida right now? Mujhe advice chahiye, please!