I've used Kenwood head units in my Harley for six years.
95% of the music I listen to is on my iPod. I bought this unit for the front and rear USB ports. I have my iPod jacked into the rear port so there is no exposed wire clutter, a very clean looking installation.
The Kenwood unit handles the harsh motorcycle environment without problem and is very reliable. the 22 watt RMS amp is adequate, although I have two separate amps jacked in for the front and rear channels.
I would buy this unit again.
By the way, the Kenwood unit this one replaced is now in my truck.