Gokul Chat offers great chaat (their Aloo Tikki is the best I have had so far in Hyd, and beats out Sardarji also), but it comes at a price. The place is always over-crowded and you have to fight it out to get your orders. It's also hot and extremely uncomfortable. But, if you relish good chaats, and don't mind sweating it out for it, give it a try.