@PaulyWalnuts The LB-501 is the standard workhorse for me. 0.01g resolution, and 500g top limit. AC power, no batteries, no timeout, and backlit LED display.
The LB-501 is a solid performer. I have one and it’s very frugal on batteries. For me the power connection is just in the wrong place. Mine also came with 2@200g calibration weights.
The way I mix I have never needed or been screwed by the timeout feature. (Like I’m gonna stop for long, mid pour of a single concentrate). Nope.
Before the 501 I had and still have a cheap China $10 0.xx scale, no weights, that measured accurately (used the 501 weights) . Oddly it stunk of petroleum and was stored in the garage for months.