Upgrading to 3BHK in Greater Noida — builders ka real scene kya hai?

Budget finalised, loan pre-approved — now stuck on which builder in Greater Noida. I'm currently in a 2BHK in Sector 137, thinking of upgrading to a 3BHK in Noida Extension or Yamuna Expressway side. Dekh raha hoon ATS, Godrej, aur Gaursons ke projects. Matlab, inka actual delivery track record kaisa hai? Brochure mein toh sab sahi lagta hai, but construction quality after possession – cracks, seepage, ye sab kitna common hai? Already home loan hai, so extra hidden charges ka tension hai. End-user ke liye kaunsa builder better hai long term mein? Koi real experiences share kar sakta hai kya?