RERA is just a paper tiger for Delhi properties

Is RERA registration enough for New Delhi properties, honestly? We're looking at a 3BHK in Vasant Kunj, maybe Revanta Multi State CGHS Ltd.'s Home Making Smart Floors, for our growing family. My wife is super worried about legal issues. RERA site pe check kiya, but kaise pata chale builder ka *real* track record? Title verification mein kya hidden traps hain jo log miss kar dete hain? Aur agar builder delay kare, RERA complaint file karna worth it hai ya bas paper pe hai? Need solid advice.