The fourth-generation iPod Nano looks quite nice, is pretty cheap, and you can't beat its hardware and user interface design.
It has a new tilt sensor, and accessibility features for the visually impaired, as well as a curved screen to magnity images and videos, and this is nice because of the generally smaller screen size that the nano must infact posses to remain "nano".
The sound quality is only average, however, and the rounded screen can cause quite a glare if light hits it from the wrong angle. Users must upgrade to itunes 8 to use this device, and there for users must have an Itunes 8 compatible computer and operating system. Itunes 8 is awesome though, and the majority of people would appreciate it.