Yep--if you have plans for rocks and stumps the HD version would be a good investment. I have torn off the shank (with tooth still on) while digging stumps. A call to the dealer, and through several different folks, and was told it was a wear item and not replaceable under warranty. I have a great neighbor who welds--he put it back on, and strengthened the other three and no problems since then. The next time I was in the dealership--went through the parts people (had spoken on the phone) and looked up the shank--and then determined it should have been a warranty claim--I'm happy anyhow--I think it is stronger now than a new one would be.