Go for Innova...ung issue sa D4D or CRDI I believe na correct na sa2010 models onwards.
as a car broker for brand new cars i would simply suggest the innova. toyota is known for creating good balance between being practical with a hint of good tech and design. both the innova and the vios are the most practical vehicles i have ever seen come to the phil market. the adventure is a good option but the innova variants still beat it. practical ang innova coz you get almost the ride height of a compact suv( youll be using it in bicol) and the seating capacity of a mini van. the toyota brand itself is a reselling advertisement on its own already which adds as a very good factor. if you want to customize it, hindi ka mauubusan options as well. besides as has already been quoted, its your option for the automatic tranny between the two.