The KeepKey is very nice and all but my Trezor does its job just fine. It seems like KeepKey wants to be the Apple of hardware wallets. Double the price for the same functionality and a bit better aesthetics.
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That is how I generally fell about every hardware wallet. I don't know what makes them so expensive, electronic component used to build hardware wallet are not that expensive after all.
Unless you have serious number of coins you need to store I can't see a reason to use hardware wallets other than trying to be fancy.