pH meters

is there any real advantage of the sort of flat push panel on the pH
meters over the knobs if both of the machines are digital? i had a
vendor say there was and i really don't like the guy but he may KNOW
something, though i doubt it's much if he does!  anyway, should i
consider that?

                                  ***
                  Conservation DistList Instance 2:12
                  Distributed: Sunday, March 12, 1989
                        Message Id: cdl-2-12-002
                                  ***