Low filtering material and crappy bypass is what I remember being the main reason for their shittyness. I never had any problem with my Frams but I don't want to take a chance with something that will cost me 1-2k dollars to rebuild an engine if my oil filter explodes or fails. I normally use Bosch or MAZDA filter. MAZDA filters have about twice as much filter material in them as the fram ones. Thats one big *** difference.
The mazda filters are like 5 dollars. Its worth getting them so why be a cheap bastard?