Ansal Aastha Mig Zone: Real experiences on builder and RWA?

Did a site visit to Ansal Aastha Mig Zone in Rajkot. Looks decent, but I'm currently in a 2BHK and thinking of upgrading to a 3BHK. Not sure if the carpet area efficiency is actually good there. Builder ka track record kaisa hai Rajkot mein? I mean, delivery aur quality ka kya scene hai? Since it's completed, society formation aur RWA quality kaisi hai? Is the price jump worth it for the usable space and peace of mind? Already have a home loan, so har extra cost matters. Any experiences?