Never had good luck with Delco. Had a set of rotors on my 2007 Ram 1500 that rotted like they were tin foil. Funny story.........I took them off and leaned them against the wall of the shop 'til the next time I was heading to the recycling center. A week later, the inner and outer surface had separated, and 1/2 was laying on the floor.
yeah, a lot of the regular delco stuff is hit or miss but i've found the delco gold series stuff to be pretty consistently good quality. especially their suspension bits.