I think the vitara is the smaller one with 3 doors and the grand vitara is the 5 door model

my sugession would be to go with a rav-4, it may be a bit expensive but you get great reliability and availability of spare parts. Other sugession would be to get the nissan X trail ( 2nd hand xtrails are really cheap and their quality goes just as far as toyotas)

ps-avoid suzuki!