When using a digital readout, what is the rule of thumb to check tuning (assuming you are not blessed with a great ear in the first place) - eg. the note should be in tune a few seconds after it has been played? Or if left to ring, should remain in tune for as long as the tuner senses it? I guess this brings into play a few other things, like age of strings, type, quality..? And as previoulsy mentioned in another thread, pluck versus bowed.. Thanks for reading!