I have a few digitals and beams, here's my take on it. For a digital to be great it has to be an expensive "labratory grade" type scale, but a cheapo can be plenty accurate enough for our use if you do your part, the shitty part of that is that if you don't know what you need to do and look for it can lead you astray.

If you're trickling onto it they have a delay, some have a pretty long delay, plus they can 'drift' meaning that they loose their zero while you're trickling. This can be checked by lifting the pan and verifying the negative weight reading to be the same as when you started, then setting the charged pan back on to re-verify the charge weight. Then after dumping the charge into a case verify that the empty pan reads zero. If you do all that, and it was warmed up and calibrated when you started the session, you can generally rely on it's readings. Unfortunately some will drift as the battery voltage drops so that's another problem to contend with.

If you're just verifying dropped charges they typically work just fine, but you still want to verify the zero on the empty pan between each weighing. Also know that some scales appear to be programmed to show the reading you want. Meaning that if there's close to zero on the pan it might show zero even tho it's not actually empty, then you add a tiny bit more and it 'jumps' to the actual weight.

Accuracy, repeatability, and resolution are all terms that are often confused for each other. My latest 'go to' digital scale has a resolution of 1/100th of a grain, but in actuality it jumps .002 at a time, not .001. I don't think it's truly accurate to that level, but it seems to be pretty close. Being able to see to the hundredth can be a blessing and a curse. That scale has a pretty long delay when trickling and it will drift if trickled slowly, just as most of them will do. It can read one kernel of stick powder in a loaded pan so it is pretty darn sensitive for a cheapo digital.

This is the scale I'm referring to https://www.amazon.com/gp/product/B00L3LUCJ4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I'm not endorsing it as being great, but it's pretty good for a cheapo. I bought it several years ago and these things advance quickly so it's likely that there's something better in the same $ range today.

A beam on the other hand can suffer from stiction when trickling, but since it's a mechanical device you can move it gently or tap the bench near it to break the stiction and show the true reading. Temperature changes won't change the reading in a measurable way and there's no voltage changes to worry about. On my next session I plan to go back to the beam to see which I want to rely on. Another option is to use both, if they verify each other then it's extremely likely the the weight is correct.