My mom has an 03 and the bose subs can bump pretty nice with just one Assuming it has improved in the newer years the subs will be enough. just to give you a base of how bumping the bose system is I am black so you know I bump the base. I can't help it the music requires it. But I have not heard the avi's sound system. As far as bose go you can't go wrong if it is an option that comes with the car. But you sould get the maxima because the new one comes with a semi-automatic transmission. I don't know if the avalon has it but basically you can have your cake and eat it to. there is an automatic mode and a manual control mode feeling lazy stick it in auto. Feeling sporty stick it in the manual mode. Plus the avalon is super big and fat. But I am positive you will not be dissapointed either way they are both definately nice cars and I am happy for you that you are getting one of the two.
