The New Kia Seltos with the IVT gearbox is a better option for you. The IVT is a very smooth transmission and provides jerk-free gearshifts, which you will really appreciate in city driving. Kia's IVT also works well on highway drives and doesn't have that 'rubberband effect' (sharp rise in revs without a corresponding rise in road speed) that other CVT gearboxes are notorious for.
The DCT gearbox is quicker shifting and also comes paired to a more powerful engine. On the flip side, gearshifts on the DCT are not as smooth as the IVT in slow-speed driving scenarios.

