I lost a Comp XS280S solid after 1k mi,my buddy lost a MP .528 solid after about 10K mi. I was using Valvoline, he was using Mobil 1 He currently has a XS280S and has been fine for a few years now, I went with a Comp street solid roller(XR280R) and it also has been fine(I like it a lot better)We both are now using Brad Penn

Almost forgot.....I know 2 other guys that lost flat tappet cams also,1 Chevy and 1 Ford...not sure about cam brands there though