You can't go wrong with the Jazz. We have the first gen its A/T and it logged 110k already in the odometer. No problem whatsover with the tranny and all. Before I got my pick-up, we used to load it with 90 trays of eggs 4 times a week from Batangas to Alabang for 6 months. We brought it to Baguio 37 times already since it was bought last 2004. It never felt wanting in the power aspect. With regards to comfort, my kids slept from Alabang to Baguio straight without waking up.
Last year my wife bumped a Toyota vios taxi's rear bumper and it got a huge dent, the trunk can't be closed and the rear lights popped out but the our jazz' front bumper just got small scratches and in fact we are still using the same bumper until now.
This is the old Jazz I'm talking about and I will give it a perfect score of ten (and I would not even start with the Fuel consumption because for me thats a great big bonus! 12km per liter!) what more if its the new and upgraded one. Yeah the one that you are thinking of getting!