The 2005-06 Nissan Altima with its efficient engine and sharp styling has been an excellent choice for commuters and car lovers alike. For this Altima, Nissan offered a basic system and upgraded Bose stereo system, and plenty of aftermarket upgrades are available for both sound systems.
The Nissan Z has been around for a number of years - it's always been a sporty car that combines power and performance. The 350Z offers plenty of speed and handling, and it does so with a refined cockpit and plenty of extras. However, unless you have a model with the upgraded audio system, chances are good that yours is a little out of date.
The Infiniti G35 was named 'Car of the Year' in its first production year, and was included in the 'Top Best List' by Car and Driver Magazine in 2003 and 2004. It's a great car that has tons of potential for audio upgrades.