I listen to those who have used them. Mike from MRL and Jim Laroy, the guy from B3, Brian from IMM and on and on. All of them have posted pictures of how crappy the geometry is and how bad the quality is. All of them build engines for a living. I trust their word. If I have five grand in an engine, I sure as heck ain't gonna run 200 dollar rockers. I am also not going to advise anyone else to.
Glad you've had good luck with them. Everyone is not as fortunate.