If you plan to keep it for more than 5 years, go for gas. Anything less than 5 years, its ok to go with the diesel.

If you go for diesel, just watch out for bad fuel which can ruin the injectors in the long term. Type " 1KD-FTV " in wikipedia and see what I'm talking about.

Also take into consideration the mileage you cover annually. Anything above 10,000 kms per annum would necessitate a diesel.