I have been to Bangalore's UB city, Delhi's Select City Walk, Gurgaon's Ambience, Kolkata's South City, Noida's Shipra, Hyderabad Central........but nothing can beat Phoenix Market City. Its humongous and brings some classy and quality crowd.
If you are a MALL-RAT and don't visit PMC when in Mumbai, then go and jump in a cat's stomach.