Adventure is the better choice especially for business. Compared to the Avanza, it has lower parts and maintenance cost (basic old school diesel versus modern 16 valve EFI gas), better fuel consumption with lower overall fuel cost (over P12/L), higher payload capacity... the list goes on. Calibration is relatively cheap for non EFI diesels. Our Revo diesel had it done once around 6 years ago. Have never needed a repeat so far. Besides, if the vehicle is well maintained, it will lessen the instances of smoke belching.