I fooled around with several different digital scales over the years and had complaints with all of them, ranging from being very slow to being inconsistent. I would try the same weight on the scales several times and got differrent readings each time. I weigh all of my 22 Rimfire ammo for target shooting, sorting into .1 gr groups. I'd put the same round on the scales and get different readings by as much as .3 gr. When trying to sort to .1 gr, getting that big of a variance just doesn't cut it. I Tried RCBS, Hornady, Dillon and CED scales. CED makes the Dillon, but I bought one from CED directly. None of them were what I wanted, which was/is accuracy, repeatability, and speed. So, I wound up buying a Denver Instruments APX-153. It measures to .1 gr accuracy and it is lightning fast. As soon as you place a weight on the scale, the reading is right there; no waiting like the others. And, I can put the same round on the scales any number of times and get the same reading. I only use it for weighing 22 ammo and bullets, not for powder charges in reloading. There, I use a set of beam balance scales which works for me as I don't load large numbers of rounds at a time. I set my measure to throw light, then trickle up on the beam scales.
As far as digital scales go, for me, I can't find any use for them in reloading, just measuring loaded 22 ammo and bullets as I mentioned above.
Don