My 80 has a set of EBC Greenstuff pads on the rear brakes that have lasted a very long time, maybe ? 100,000 miles, I've forgotten it's been that long. One pad on one side is just now getting worn out. Truck's not lifted so the proportioning valve should still be set correctly. They seem to be good pads.
I have 100 series Toyota pads up front, also long lasting, 50,000 miles and plenty of life left on them.
A bit off topic but FWIW: I swapped my front pads (after maybe 25,000 miles of use) side-to-side a few years ago as an experiment of sorts. Swapped each pair of pads first right to left, left to right, but also swapped pad positions; what was the inner pad went to the outer position and vice versa. I know, not standard practice, but the pads were wearing unevenly a bit and I said Meh, if it doesn't work I'll just get new pads. It's been about three years and I've had no problems with the front brakes after rotating the pads, truck stops straight ahead every time I push on the pedal. FWIW.