You should suspect/eliminate the discs.
In my experience the front ones last for 20,000 miles and the rear ones for 40,000. Either will warp and cause judder on braking although with the rears you will barely feel it through the steering.
My 140k 1998 is on its 7th set of front discs. I do not believe that aftermarket ones are better than the OEM ones in this respect.