Recently 2 amp chargers or "Rapid Chargers" were a topic of discussion on a podcast and it seems they can be more difficult to find especially if you want a quality one. Most generic or standard charges are 1 - 1.5 amps. The Blackberry Premium Charger(2 amp) was recommended but it is only a wall charger.

Several months ago I purchased one of these Sprint branded all in one Travel Chargers. It's a well made 2 amp charger with two USB charging ports. It has been very convenient to have one charger for a wall outlet and a car charger. These Sprint branded ones are available on ebay for $6 - $7 free shipping but I'm sure there are other options. I only use the OEM cable for my phone as the Blackberry cables tend to not be as snug fitting on my EVO LTE's port but maybe others have had better luck.