I have tried many brands and all types of materials in adverse conditions over the years. The best combos for me have been, Sintered and sold rotors when wet. Carbon graphite when dry. If you run carbon graphite when its wet they probably won't last through a complete Enduro, and if you run the sintered when its warm and dry your brakes seem to heat up faster and fade and squeal more.
This last season I have been using pretty much EBC exclusively. the previous season I used galfer mostly when dry and DP or Moose when wet. The Moose pads are made by DP but are slightly different, they have a thicker backing for better heat dissipation.
IMHO the most important aspect is the material of the pad for the conditions not so much the brand as long as they are one of the quality brands you have heard of..... EBC, DP, Moose, Galfer, Braking, all are great brands and sell quality products.