  By using high-quality single crystals, we quantitatively compare the
transport properties between LiFeAs and LiFeP superconductors with compensated
electron and hole carriers. The low-temperature resistivity follows the
Fermi-liquid $AT^2$ dependence with a factor of $\sim 3$ difference in the
coefficient $A$. This highlights weaker electron correlations in LiFeP, which
is consistent with its $\sim 70$ times lower upper critical field than that of
LiFeAs. Our analysis of the magneto-transport data indicates that in LiFeP the
electron carriers with lighter masses exhibit stronger temperature dependence
of inelastic scattering rate than the holes, which is the opposite to the
LiFeAs case. This stark difference in the band-dependent inelastic scattering
may be relevant to the recently reported contrasting superconducting gap
structures in these two superconductors.
