if u will keep car for more then 2 years, then go for santro , to enjoy the 1.0 efi car with gud Ac and worths wat u pay, but on the otherside, if u have plans to sell the car after using 1 year or max 2 years, then go for cultus, and spend ur time with new ride, but obviously doesn't worths wat u pay, i.e 700k .............
cheerz