Well guys I used a RCBS balance beam for yrs. I finally got a Pact II digital several yrs back. I still have the balance beam and it stays set up on my reloading desk.
I have checked and double checked, relentlessly, the digital and NEVER found it out of of sync with the beam.
I ASSUME all digitals give warnings when something is out of spec. I always rezero with the provided weights and double check against the beam scale.
I do find it FASTER and easier to READ than the beam.
I don't know if the Pact II is still on the market but I like and recommend it. IIRC it was @ $80.00 at Midway. The last time I looked new digitals were between $100.-150.