Nokia Chargers Power Up
"While it's been confirmed by Nokia already, the team over at WeLoveWP.hk have run some tests on charging the Lumia Windows Phone with a number of options. Turns out...the Nokia Lumia adapters provided more charge for a faster rate of recharge."
I'm not sure a "faster" charger is that much of an advantage, as bearing in mind my rudimentary knowledge of battery technology, fast charging like this tends to stress the battery more while also generating more heat. You might be trading off faster charging against a shorter battery lifespan. Of course, if you're in the habit of buying an extra battery or two, or changing phones every couple of years, that might not matter much. The nice thing though is that since the Lumia models will charge off a standard USB port, the decision is yours.
"A planner is a gentle man, with neither sword nor pistol.
He walks along most daintily, because his balls are crystal."