As someone else stated, comparing 2 scales is useless unless you “know” which one is accurate. Mechanical scales can be off just like electronic ones can.
Buy a quality set of check weights if you want to be sure. Calibrated electronic scales are more precise than mechanical ones (at least ones used for reloading) .1 vs .02 grains for example but really for reloading the additional precision isn’t needed.
We as reloaders tend to overthink a lot of things that make little to no difference on target.
Unless you have a scale that is grossly out of calibration, it’s just not going to show up on target, at least in a typical hunting rifle under hunting conditions.
To answer your question, if you are willing to spend the money the A&D Fx120i is a very good digital scale until you get into really stupid money. I hear the Creedmoore Sports scales is good as well but I have no experience with it.