Comp Cams...trouble in paradise?

My engine machine shop guy (who is building a 400 Pontiac motor for my youngest son right now) told him he refuses to install ANY Comp Cams on any engine due to over a dozen failures in the past year. He blames it on the low lobe angle cut on the hydraulics (machined to cause the lifters to rotate). He claims the angle is way lower than any other hydraulic grind on the market and is inducing lifter spalling and subsequent cam lobe failure. He also claims Comp Cams is not honoring the warranties on these and so is refusing to supply Comp Cams of any grind..hydraulic or otherwise...due to these issues.
Has anyone heard anything about this., or just another biased opinion or urban legend? I was strongly looking at a Comp Cams grind for my 340, but now....????:wack:
I know Summit moves a TON of these things. If there was a problem, wouldn't we have heard of it?