I put a new set of emglo(or is it emgo?) pads on my Norton when I first got it. I didn't know what to expect from the brakes, so I was happy enough with them other than the fact that the front brakes squeaked loudly when applied.
I changed to those sold by Vintage Brake and not only did the squeaking go away, the brake performance improved quite markedly.
The brakes still will fade when really hard pressed though. I was following my high speed friend Robert on his Vincent thru the Duffy Lake Road (It's a beauty) when I lost the brakes on the third hard stop from 75 MPH down to about 10 MPH, steep downhill to boot. His brakes were fine, but mine were overheated so I lost all braking in the hairpin. This was a little scary as the drop off into the canyon below is a couple of thousand feet, very hard on tin work.
Looking at the tiny surface area of the pads, it's a wonder they work as well as they do.
I now try to remember that I have about two hard stops in the brakes and ride accordingly. Most of the time this is plenty.
The Duffy Lake road is a great spot to test brakes, especially when following Robert on his Vincent. Robert's son Jeff was along on a new Triumph Speed Triple. Our old bikes were no match for his Triumph earlier in the day on regular roads, however we left him far behind and scared spitless on the Duffy Lake Road!