full length sizing die w/mandrel in one

[Brawley_z06]

im currently using a whidden gunworks full length bushing die for my 6 dasher and followling behind it with a a 21st century mandrel setup. ive been kicking around going with a short action custom or a micron or similar that sizes and mandrels all in one. is there really any benefit or these dies other then time honestly. so they make better more consistent ammo? thanks in advance

 

[L.Sherm]

Have you tried just a bushing only?
To answer your question I think time might be the only thing you save switching.
If your dead set on mandrels and are not using carbide mandrels that is what I would switch.