Unfortunately, It seems like I often try things labeled OEM and it's still a knockoff. Looks like this might be a good bet, though.

This looks pretty legit, unless somewhere in the fine print its fooling me.

I bought an Anker car charger on Amazon for $9.99 and it's quick charge.

http://www.amazon.com/dp/B00B8M4IMK/ref=cm_sw_r_udp_awd_9V6zvb0T1S6EP

Also bought the OEM Samsung adaptive fast charging wall adapter on Amazon with two USB cables for $16.

http://www.amazon.com/dp/B00TQZ3Z8Y/ref=cm_sw_r_udp_awd_XU6zvb1QY2BAD