Well, the Mazda 6 is really aging fast and it would be replaced either next year or in 2009.
I would go for the Camry 2.4G 5A/T and save Php 215K over the 2.4V. Visually they (G and V) don't have any difference except for the leather seats inside, cruise control, immobilizer, power rear sunshade, power rear seats, etc.... The Camry definitely more comfortable bec. it is has more space for the rear passengers (where most buyers of this vehicle will be seating in the first place).
Ikaw ba yung may Grand Vitara, Fortuner, and Sta Fe all bought from 2006 and this year? Wow, you are sooooo lucky!