I would rather have paid a bit more and gotten better pads, but mine took me completely by surprise and went from no indication of being worn to fading heavy under moderately strong pedal. I never got a squeak or anything else, but when I pulled the pads off they were toast. I was leaving for a short road trip in the morning and had no option but what I found, was going to have to borrow a car and drive 1.5 hours to find them if NAPA hadn't had them.
I ran to about 35k (kms not miles) on my oem pads and they still had some life left. Changed them out for EBC greenstuff. Like the greenstuff but want something a bit more aggressive. If I don't go to a full Wilwood brake kit this summer i'll probably move to Hawk HPS+