Obviously go for CITY more power better peformance than VITZ...(City Brand New Flawless) vs Vitz (OLD and USED + Meter Tempered) so VITZ may give issues in a short period of time whereas CITY will tend to give no issues for years!!!
City has got bigger boot bigger body...Good ABS brakes...Comfortable drive though not more than VITZ but i think not less than VITZ also because after all its a HONDA!!!
As far as you are considering the transmission of CITY bro my clear cut advice to you don't go for Auto City...It has very poor peformance as compared to MANUAL but if you are too much COMFORT LOVER than Auto may be a better choice ...rest the decision is yours...AUTO may also give some issues as said by a PAKWHEELER about his 2011 Auto City but MANUAL DOESN'T BOTHERS SO PLEASE GO FOR MANUAL AND ENJOY!!! :):)