Got mine a few months ago, and it's been flawless...except for Gauntlet: Dark Legacy, but that's a port so it doesn't count.
Nintendo built this thing with young kids in mind. It's small, doesn't generate much heat, and even your grandmother could figure out where to plug in all the wires.
As an example of fine engineering, the mini-CD (or DVD or whatever) clicks into place when you put one in. Here's the genius part: If you open the lid while the disk is still spinning, you have to put your finger on the center spindle to unlock the disk. When you push down to unlock it, you coincidentally stop the disk from spinning. No scratched disks here!
BTW, Zelda is the greatest game ever!