Delhi property legal checks are a complete headache.

Since last Diwali, I've been eyeing properties in Saket for an upgrade from my 2BHK. Delhi mein prices are crazy, but I'm looking for a 3BHK. My biggest worry is legal due diligence. Builders like Reputed Developer, unka RERA registration kitna reliable hai? Matlab, is it just on paper or actually effective agar koi issue ho? Title verification mein kya specific red flags hain jo buyers often miss? Also, builder ka legal track record kaise check karein properly before putting down big money? Is there a foolproof way to ensure no hidden encumbrances? What's your experience with RERA complaints – are they actually helpful?