I started with an RCBS 5-0-5 20+ years ago, and it always worked. About 10 years ago I was seduced by a Dillon electronic, and used it for several years. The digital scale IS a lot easier to use when doing +/- weighing of cases or bullets. And when they work, the digital is also faster in determining an unknown weight of powder, as when setting up a powder measure.
But . . . my Dillon started getting flaky a few years ago. This showed up in varying readings for powder weight when I was just checking (confirming) occasional loads in the middle of a (progressive press) reloading session. My powder measures are usually quite consistent with the powders I use, so I would be surprised by a variance, and when I would reset the digital scale it would then read the weight I was expecting. So it got to the point where I just didn't trust the digital scale. And frankly, for just checking a preset weight of powder, a beam is just as fast, and I don't have to wonder if it needs resetting or not.
I haven't used the digital scale in 3-4 years now. And frankly I don't miss it. Just haven't gotten around to putting it up on ebay yet.