I bought three of these: they are a bargain. They travel well, and have a good build quality. The folding prongs make for easy packing in a briefcase pocket.

They seem to have proper circuitry isolation (which a lot of cheaper chargers don't--you can tell if you have EMI issues with the touchscreen). I haven't noticed any problems yet.

The charger is a little long and wide, so there can be issues fitting the charger next to other dongles and power supplies.

The charger has a blue light that glows when the device is receiving current. It cannot be turned off unless you unplug the device.

I also use this with a second-gen iPod Touch without issue.