When Nintendo rolled out the DS Lite in 2006, it was a drastic upgrade from the original DS. The clunky DS was transformed into a sleek, iPod-style device -- with a slimmer profile and brighter screens -- and the device started showing up in the hands of kids and adults everywhere. Over the next few years, the system sold roughly 76 million worldwide, blowing away Nintendo's Wii, Sony's PSP, PlayStation 3 and Microsoft's Xbox 360 in sales.
The new Nintendo DSi, in stores on April 5, isn't such a drastic redesign, but has a few clever enhancements -- two cameras and downloadable games via Wi-Fi -- that make it a lust-worthy gadget. But should you spend the $170 for the upgrade?