Skinny, I haven't tried the Forster. I do use the Redding neck sizer with the bushings. One of the features that makes the Redding work so well is that the bushing floats- finding center naturally and not inducing runout. Whether the Forster die allows the neck bushing to float is not clear to me from the link page.
Measuring sized cases from the Redding die on my runout gauge suggests that the system works.
If you want a less expensive, but slower, alternative, the Wilson hand dies are inexpensive, and work very well. The Wilson neck die uses the same bushing as the Redding, btw.
With the Redding or Wilson die, if you get the titanium nitride coated bushing, no lubricant is required at all.
