Procomp rockers--any good??

Do not get them ! A buddy of mine put at set on his big block '69 mach 1, broke 2 just driving around on the street. Did not even get a chance to abuse them. Called the company and they sent him a brand new set. Less than 200 miles later, same thing. Company will not return his calls now. He has since put a set of comp cams roller rockers on, several thousand miles and much abuse later, still running good !