Brand of the charger doesn't matter, its the ma or amps. Most chargers that come with today's high end smart phones will charge at 1 amp or 1000 ma. There are many aftermarket chargers that will only charge at 500 or 750 ma. Just have to read the specs about what you are buying. I use my epic charger still for Photon and its fine, charges as fast as the stock cable.
Any charger connected to the USB on a pc is a trickle charge, no matter what the cord is. Don't plug to PC if you are in a hurry.