NHSHOOTER,
For stick powders, hands down, my choice is the JDS Quick Measure. It is a bit odd to adjust and takes getting get used to, but they guarantee stick powder charges within 0.2 grains, and I've never seen mine go outside that limit, and it usually stays within 0.1 grains as long as it is firmly mounted. The only thing that will throw weight more precisely is an electronic dispensing unit, but anytime I've found a good load, it has proven insensitive to a couple of tenths of a grain of variation. I only weigh during load development.