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I agree with Glen in that no test is the be all and end all. They each give you some information about the edge, and you have to learn to interpret that information.

One other thing I should have...

For me, the HHT is just an indicator that a blade has reached a minimum level of sharpness. It shows that a good edge has been established and is ready to be polished. I can pass the HHT off of a 4K...