Got my new scale and powder trickler, pulled down some old reloads, across the board my powder loads were about 15-20% short. So on a small pistol load they would be a grain or two off, on a rifle charge they were 5 or so grains off.
Years ago I bought a Harrell's measure and have been very satisfied with its performance. I think I sold that RCBS electronic dispenser/scale to get it, and have been a happy camper since.
I have one of the Lee Perfect powder measures. It is very inconsistent and spews small flake powder. I have been disappointed with every Lee product I have purchased over the years with the exception of their dies.