A520s go on all my bikes. There's a pair for the new bike in the package I have to pick up at the post office tomorrow.
I don't like 700-800 miles of breaking in the bearings, but maybe that means they'll last a really long time.
Usually the first thing I do with them is repack the bearings.
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"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey