A thought and a question for the down tuners...With the lower notes in standard tuning, I notice that the initial blossom of the note pulls sharp and then the note settles into pitch. I also notice that this can take a perceivable amount of time (I can hear it as well as detect it with a tuner). I also notice that this fluctuation in pitch is exaggerated if I play harder. Does this effect get worse as you tune lower? OR does it not matter? In the example of a 410hlf and a low A, the cabinet's usable response goes down to 48Hz, and a low A is 27.5Hz. At that range, human hearing is tapering off as well, so the fundamental is essential out of the picture so far as being audible. I would expect the harmonics to pull sharp and then settle into pitch over the course of a couple seconds, though. If you are playing quarters or eighths most of the time (and there is no time for the note to return to pitch), do you tune the string flat so that it will ring true? Or do you just not worry about it? Or are my ears and my tuners wrong and this effect does not exist?
My expectation is that it will be a problem that must be addressed - my higher notes ring true from the beginning of the note; the problem begins to appear as I move down to lower notes and looser strings.
EDIT: To clarify, I think downtuning is perfectly valid and reasonable even though I don't do it. I just think that you are starting to battle the physical limitations of the instrument, and am curious as to how you deal with that.