+1 to all the advice already given.

Another member told me once that something else that works on a tough beard is a more wedge like razor. Apparently the stiffer grinds tend to plow through the beard a bit more easily than hollow grounds (which can catch or skip on the hairs a bit more), which can make the shave a bit more comfortable.

I dont know how much this is the case, as I've only just got my first wedge and I've yet to hone it so I've not tried it out yet. But it worked for this member so it may be worth a try?

Not that I'm trying to enable your RAD or anything..!