4th gen OE rotors warp. A guy I know had brembos warp on him, too, after spending some coin on them. Cost isn't the only factor in brakes and no guarantees against warpage, but in this case cost seems to be a priority.
Autozone and Napa sells higher grade versions, but a significantly higher price, so I didn't recommend them. Duralasts have a 2 yr warranty while Napas comparable priced rotors only has 1 yr. Can't speak for trucks, but there's been several F-body folks that bought the Otterzone specials and have had no complaints.
He'll stay within budget if he gets rotors anywhere, not just Autozone, if he stays around 40 bucks per rotor and gets some decent pads. Of course, if Zabo does it himself (highly recommended), THEN spend the labor money saved on upgraded rotors.
Remember, you're spending other people's money, not your own. If I were doing it, I'd concur on springing for the extra bucks for quality stuff, but Zabo appears to be on a stricter budget. Buy the best quality you can afford.
2010 2SS/RS Auto, Sunroof, Engine Cover. Transformer Edition package.
2013 ZL1 ragtop #5478. 1 of 54 CRT M6 'verts.