Originally Posted by veganbikes

Yes disc brakes always disc brakes on an e-bike and ideally hydraulic disc brakes.

Rim brakes and certainly mechanical disc brakes are fine for normal bikes but for an e-bike I want good reliable stopping power especially pulling trailers and riding in the rain frequently. My Magura MT4s and MT5s have been trouble free, the only thing I have needed to do in 3000 miles is replace some pads no adjustment or noise or anything and the pads aren't exceptionally more expensive than my rim brake pads and I don't necessarily have to replace them quite as often and no cables or housing to fray.

If I was sticking with rim brakes (which again would not do on an e-bike) I would get SwissStop or KoolStop pads and Jagwire Elite Link Housing/Cables or similar compressionless housing with stainless polished cables with no coatings.