I find j&m speed a bit vague sometimes but they are good on price and have only made one small mistake with one of my orders. Overall I highly recommend them.
If your front and back brakes are wearing at nearly the same rate, there must be something wrong. The back brakes are probably binding. Coppergrease all the moving bits (apart from cylinders and linings).
I think i need new rear brake back plates, as they are rusted up bad, and allso stopping the self adjusters working.
But even ebay dont have the back plates for my car, lvw dont, and j&m speed dont