For power, always four cylinder engines are better than three. It will give you more power at low rpm and of course more economy. The success of cultus lies in its legacy carb system engine that can be fixed by any traditional mechanic for Suzuki. Today's cars are so much sophisticated that they can very rarely get out of order and even most of malfunction is caused by negligence.
For comfort, we can have a rough estimate form the diameter of tire. The larger is tire you get more comfort in car (Not valid for offroad vehicles) and less worries about small pits.
Both cars are availible or may be fitted with Power Steering & Windows.
Vitz is the choice if you don't care for price & do not have often trips to your village. (Pind)