Just got mine yesterday. So far so good. As for step charging I have the Orion Advantage. I can not tell a difference between step charging and linear charging. Both feel the same to me.
Anyway I bought this unit mainly for breaking in and tuning motors based on the fact it can also power and /or charge my comm lathe so my orions can just charge my packs.
I noticed that the default voltage for motor check is 3V, what do most dynos actually test at voltage wise and what is everyone using default or other?