there are various parameters that you consider - size and utility for instance. In short, there is a no one-single way to buy different things or fulfill different needs.
IN SHORT, YOUR CHOICE OF PURCHASE DEPENDS COMPLETELY ON
You require an outfit, but are unable to find something that suits your need. The problem persists across a number of shops. Exhausted with shop-happening, you finally decide to walk into a boutique, and all your specifications are taken care of by the expert there. He willingly readies your requirement, that's true to your taste and requirement.
If you put in so much thought and effort over regular stuff, doesn't making a long-term investment (like a home) demand much more?
That too, in a city like Mumbai?
2 Lifts per wing
Car Parking lots across basements and podiums
Power backup for Lift
Rain Water Harvesting
Piped gas connection
Earthquake resistance design
Security - Video phone at the entrance