Noida Extension investment: RERA and legal worries

My lease ends in 3 months and I'm totally done with renting. Looking at Noida Extension for investment, maybe near Mahagun Mywoods Phase 3. But yaar, RERA registration aur title verification ka kya scene hai? Builders like Ravi Builder ka track record, I mean, kaise check karte hain properly? Not sure if RERA complaints actually work ya bas paper pe hai. Koi real experience batao, does it really protect us from delays ya bas formality hai?