Comp cam

Comp has had a lot of issues.
1. They sell a lot more cams than any other grinder so of course they will sound like they have more problems.
2. The other half of the issue is the lifters not ground with enough crown to make them spin in the lifter bores.
3. Do your homework and learn about cam and lifter manufacturing issues. There are a few threads here with links to YouTube videos that get into the problems at depth.
4. Any cam and lifter combo you buy should be carefully checked before it's installed to make sure it's correctly machined and then it should be installed correctly for break in using light valve springs, the proper assembly lube, and the proper motor oil.