The RCBS 1010 is a good scale and every reloader should have a good beam scale. Easy to calibrate and you know it is accurate.
As for digitals, you need to read the test results of extensive testing on www.6mmbr.com
on this very subject. My DPS 1200 was not worth a flip as far as accuracy goes. My new RCBS chargemaster has retaining zero issues (change pans and get the mod the factory is doing now put in it) and is not reliable.
As far as extreme accuracy goes, you better weigh to a tenth if you want accuracy. The best high power shooters now are using the Promethius system ($1200) to give them digital speed with beam accuracy.
I use a Ohaus navigator that measures to .001 and is 100% accurate. I throw with the RCBS about .2 under and then trickle or dipper the final amount on the navigator.
.2-.3 variances in powder will throw your accuracy off and routinely leads to lot of vertical in LR groups.