RAPID is a way better car in terms of quality built. The ride and handling will surely impress in every way. If you are looking for "AT" variant then really the DSG rocks!.
Space comfort is better and not bad. Compare it with your family/friends physic and then think to reject for space.
SKODA comes with some SHIELD package deal, I guess this will help you lot in maintenance. Although RAPID is robust car and built quality is better than CIAZ.
If you are looking for petrol variant then RAPID may not be good option but for Diesel nothings better than this. For CIAZ petrol it is way under power, and you will notice while fully loaded with passenger and luggage.
If you have though of ignoring RAPID then think to include VERNA SX(O), it comes with lot of gadgets and gizmos plus a 125PS engine. The interior finish is really nice. Visit HYUNDAI for test drive for better understanding VERNA.