This will help you decide.
http://faculty.ccbcmd.edu/~smacadof/DOTPadCodes.htm
The code is stamped on the side of the pads.
Additional reference:
Duralast Gold - FE
Duralast Max - FF
Nissan Ceramic - FF
Toyota Ceramic - FG
Akebono ProAct Ceramic- FG
Wagner ThermoQuiet Semi-Met - FG
Wagner ThermoQuiet Ceramic- GG
Akebono Performance Ceramic - GG
Performance Friction Carbon Metallic - GG