if you want a normal layout flat keyboard, and under $140, this is probably the best. Hall switches! see XMIT Hall Effect Switch Keyboard http://xahlee.info/kbd/hall_effect_switch_keyboard.html
@xahlee Unicomp Ultra Classic is also a good option
@valeg that's the buckling spring?
hall effect is much more, older, expensive, and last longer... if you haven't looked into yet...
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