I just have one of the old-school at home ones, that has the little knob on the front that you have to adjust, to get it to zero. Anyway, it weighs me almost 10 pounds lighter than my friend's electronic one.
But, I still use it because it's the one I've got and I don't want to spend the money on a different one... and who knows, maybe it's the one that's right?! I'll still be able to tell if I'm losing or not, so that's what counts for me.
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