My favorite was... HP Elitebook 820 G1, 12in size. Super portable, awesome trackpad, plenty of power in a tiny package... but old enough that updated video drivers are not available and VS2017 crashes randomly on it (a real problem as windows-centric developer).
I have an XPS (13in), MacBook (13in) and Inspiron (14in) available to me, but none have the combination of low weight and power that my old HP had - and only the MacBook has as good of a trackpad.
I'll keep looking.
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