I have both types of scale.
Used the less expensive Ohaus for decades. No problems at all.
Have several hundred rounds using the RCBS ChargeMaster. Sweet!
Have checked it against the upper end balance beam have 100% agreement.
Electonic is much faster and I believe just as accurate, though I still check the calibration from time to time.
The electronis is the cat's meow for weighing cases, bullets, etc.
I'm going to try weighing primers. Hey, why not?