Guessing that you're looking at a "Rockchucker Supreme" package or something equivalent, the scale is most likely the 5.0.5. Though it's a very basic, no-frills scale, with a powder trickler it's absolutely adequate. Pick up the RCBS check weights while you're at it.

I've switched to an RCBS digital (which includes the powder dispenser) primarily because my old eyes are taxed pretty hard staring at the reference mark on my old 5.0.5 after 50 (or so) rounds. Nonetheless, I verify the electronic against the trusty old beam scale every five to ten rounds, depending on what I'm loading. I've not experienced any differences between one or the other, provided I recalibrate and zero the digital properly (even a beam scale needs attention at setup). But, verifying removes any doubt.

Also - keep whatever scale you buy covered. Dust is not your scale's friend.