Is buying a Maruti Suzuki Ertiga VZI and upgrading it to ZXI aftermarket better than buying a ZXI directly?

In most cases, buying the Ertiga ZXi directly is the better choice than buying a lower variant and trying to make it equivalent aftermarket. Cosmetic add-ons are easy, but factory-fitted features such as integrated electronics, trim finish, and some safety or convenience equipment are usually costli