Shanks can be a problem too. I got a cheap set on sale from Canadian Tire which are guaranteed to be Asian and I couldn't get one to go in the collet. I've heard of others that were so loose in the collet that it wouldn't grip them tight enough. Just a few days ago a new member mentioned checking an Irwin, which I'm also certain is of Asian origin, and the cutting edge was tapered from top to bottom. I have a couple of old Taiwanese ones that the carbide is only about as thick as a dime.
Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.