Looking at Sigma III, Greater Noida: What's the actual vibe?

Okay I'll be honest – I thought working in real estate would make buying my own place easy. Turns out, when it's your own money, you get super picky. I'm seriously looking at Sigma III in Greater Noida for a 3BHK, budget around ₹1.2 Cr. I know what builders don't tell you, but I need real resident experiences. Forget the marketing spin, what's daily life actually like there? Are the local schools genuinely good, or is it a constant struggle for admissions outside the immediate area? My wife's pretty concerned about safety, especially in the evenings. Is it generally secure for families, and what's the community vibe like? Do neighbours interact, or is everyone isolated? Any unexpected issues current residents found after moving in...?