h.c.,
with to respect lloyd s. and not wishing wish to step on toes, but i have a different opinion:
i got rid of a lyman and rcbs sizer/luber in favor of lee's push-thru design; i saw no difference in the final outcome of my ammo when switching to liquid alox/push-thru after 30+ years of sizer/luber and traditional lube, except for the savings in time, effort and cost.
cost: dies and top punches are 3x the cost of lee's push-throughs...assuming you have the machine, which is expensive.
time and effort: liquid alox, drying, sizing and re-aloxing takes less than 1/2 the effort/time a sizer/lubricator does.
results: for me, the results are indistinguishable...i've been doing this for over 40 years, and an iron-sight 2.5-3" group with iron sights the "old way" and an iron-sight 2.5-3" group this way are a big savings of time and effort.