Summary: First off, I have used Kenwood products for over 20 years! They NEVER let down! This receiver has worked flawlessly. I use it primarily for the Ipod/Iphone interface. Even though the model's homepage states Iphone4 isn't supported, it IS! It works with my Iphone3GS as well. (Sometimes you have to cue up the music before plugging in, after you turn off the car and start it up again later, otherwise it jumps to a random album, but its minor issue.
Summary: I purchased the radio because I have a excelon, and thought it was the same. Although it has the same capabilities,I like the USB, and dis like the fact that it does not have the same features.
Summary: I bought this stereo for my car last year. Installation was a snap. Loved the way it played MP3 CDs and being able to play MP3s from USB drives, my Blackberry, and my MP3 player. As a side benefit, it also charges my MP3 player. I started driving an old VW Jetta this winter for it's great gas mileage, but hated being without my Kenwood stereo. So I got another. Problem solved. Nothing new to learn.