I had a BBK 2 for a couple years it was my first electronic scale.It worked well,I sold it to upgrade to the scale with the port on it to use with their electronic powder dispenser,although I never did get one,yet.
The BBK 2 was accurate and did what I needed,but seemed to need to be calibrated more often during use than the bigger one I have now.Not a problem except I usually load 50 rounds at a time,and after 10-15 would have to stop and recalibrate.One thing I did was went to Radio Shack and got one of the battery connectors and wired it to a adapter so I could plug it into wall and use it instead of using battery power while at loading bench.