IMO until you get to the Autotrickler price point the other ones won't be to much better. I have to have my loads dead on all the time, that's why its easier to set .2 low and trickle the last .2. I had the RCBS and Reddings and had to add or remove with those as well.
I'm using a Lee perfect powder measure it throws H4350 and varget pretty consistently, used to have a RCBS and Redding to me this is just as good. set it to run .2 grains under my load and trickle the rest. still faster than my old RCBS auto trickler.
Ive been using mine for 10 years, if its off its over by .1 or .2 grains. I always let it settle before picking it up. if its .2 over I take out a kernel. if its .1 over its getting used. that's what ladder testing if for. my nodes are good for +/- .3 grains