How deep do RERA and title checks need to go in Greater Noida?

I'm considering a few investment options around Noida Extension, perhaps a 3BHK. My main concern is legal due diligence. What's the most reliable way to verify RERA compliance for projects like Bulland Group Suryodaya Towers in Greater Noida? I've seen some older projects by Subhlaxmi Developers with title clarity issues; how do we properly check encumbrance certificates and avoid those pitfalls? Is RERA complaint resolution actually effective for significant delays, or is it mostly just on paper when it comes to getting compensation and protecting exit options?