As long as it charges your batteries to your satisfaction that is your personal objective.
What is your weight?
19-
What was your weight last month
19-
Are you losing or gaining weight?
One hundred ninety something is good enough for me.
Different resolution values for different purposes for different people. I am happy the marketplace offers a variety of meters. I smirk when my (example for non technical folks) 13.6 LED gauge readings are in error by .2 to .5 volts. Sort of makes them useless. The 4-1/2 digit LED gauge errs by four to six thousandths of a volt, therefore when it displays 14.00 volts it means exactly that. BTW a hunting last 3 digits can indicate impending device malfunction or failure. I use a voltage gauge as a device diagnostic tool.