ATFL Defence County ka carpet area kitna practical hai?

ATFL Defence County ka carpet area kitna practical hai? I'm in a 2BHK in Sector 75, thinking of upgrading to a 3BHK here. Brochure plans look good, but what's the actual usable space like? People who moved in, did you find any difference post-possession? Already have a home loan, so is this premium justified for the actual living experience? Hope others also share their layout checks!