I have several electric scales. All made in China. All get checked against a known weight, that I checked on a balance beam scale. I’m old school and will still break out my balance beam for fine work, but I do like the speed of an electric scale. For new loads I setup with the balance beam. Once I’m dialed in I then check it with an electric scale. If they agree I use the electric scale to spot check. When you find an electric scale you like but a second one as a spare. They are very cheap these days but not likely to last a decade each.
I have found all the cheap electric scales are within .1 grains of each other. For me, that is acceptable. When setting up for a new load I try for +/-.1 grains. Under if possible. More interested in under these days. In my youth I pushed the limits, not so much these days. I want consistency if possible.
I load in large batches these days. When I load I try to do it in one session or two at the most. Just finished loading 4,000 20 gauge shells with 3/4, 7/8 and a few 1 ounce loads. Next will be 5,000 28 shells with 3/4, 13/16 & 1 ounce for everything from Skeet to late season Dove to Sporting Clays. When I want to shoot it is so much easier to just grabs boxes loaded with what I need, right off the shelf. I print out a label that notes shot size, shot charge, powder type and weight, wad, primer, fps and date loaded. Sounds like a lot of unless you let your printer do 90% of the work. Loading 10-15 or more boxes of the same load makes keeping things straight easier but also more important I only need to load a few times a year instead of every week like I once did. I am so glad I have a couple Spolars and a set of 9000hn MECs as backups.