Hi I used both in 2 WD before. And now using Tucson 4 x 4 WD which has 2.4 Cc engine. As compare to Vitara - Tucson has more features n good stability in high wind speed. It has road slippery mode/ down slope/ cruise control / Full panoramic view / Nice Auto control AC / leather seats etc etc......and less maintenance n better resale value too. Easily sold ...many Europeans peoples started using Tucson too due to reasonable budget.

Atlast its all depends on your budget only.