K3 looks to be built more like a traditional grinder, should last longer than a SG. I have had my SG for about three years, I haven't had any issues with it (touch wood).
IMO the two are not direct competitors, this is also reflected in the price difference.
See if you can physically check out / try both to help you decide.
Cheers
IMO the two are not direct competitors, this is also reflected in the price difference.
See if you can physically check out / try both to help you decide.
Cheers

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