RERA complaints: Kitna kaam aata hai in Greater Noida?

EMI start hone wali hai and Signix Ventures LLP ke AFOWO Raksha Addela mein delay dikh raha hai. I work in this line, so I know the games. But for my own flat, RERA complaints kitni effective hain, honestly? Builder ka track record check karne ka koi real way hai besides official RERA site? Yaar, sirf paper pe hi accha lagta hai kya?