In this photo gallery, you'll find the top 10 contenders that have been reviewed by CNET. Some are perfect for frequent travelers, while others are best suited for the office or trips to the beach, and all of them have the option of being powered from built-in or replaceable batteries.
1. Altec Lansing InMotion iM7
The good: Seamless integration with any dock-connecting iPod; eye-catching design; includes remote; charges the iPod while plugged in; works on AC power or batteries; impressive sound with thumping bass; auxiliary line-in port for use with other audio devices.
The bad: No meter display for bass, treble, or volume adjustment; a bit too bulky for ultimate portability; remote can't navigate through menus on the iPod.
The bottom line: The Altec Lansing iM7 offers good sound quality, flexible listening options, and handy features, making it a solid choice for any iPod owner in the market for a complementary sound system.