Bushing dies also aren't the best if there's a lot of sizing to do. One example from my experience is sizing thin WW 308 brass fired in factory chambers. The die needs to take the necks down from something like .344" to .331" and in a bushing die that's not good for runout. A Lee collet die or a regular FL die w/o ball works much better.
The Short Action Custom bushings have worked great in my Redding bushing dies in my .308. I am sizing from .344 to .335 in one step with .001 max TIR. That is the worst ones. The Redding bushings would not do that for me.
