The technology has obviously improved. It may be that the premium stuff has been the same for years but only recently become affordable. I think a good deal of the improvements we've witnessed are software related as well as hardware advances.
I have a PACT digital scale made in about 1994 and it seems to always be as precise as I want it to be (as long as I regularly cancel out the "0" drift using the tare function). Check weight verification is almost always perfect but sometimes is off by 0.01 gram when weighing 100 grams. Linearity appears to be good when using small check weights. Nonetheless, when the scale says 9.8 grains, is it actually 9.80 grains? Most likely it isn't. It could be 9.84 or 9.76 grains. I always wonder, but truth be told my 10-10 has never screamed "your PACT is lying!" Not yet, at least.
