Bengaluru builder promises: What actually gets delivered?

Budget finalized, loan pre-approved for a 3BHK/villa upgrade. Currently in a 2BHK, eyeing projects like Akshaya Bliss. Is the price jump worth it? Jo amenities brochure mein dikhte hain, woh actual mein milte hain kya? Construction quality after a year कैसी रहती है? Maintenance charges worth it hain ya bas extra burden?