[rick-slo]

The plus or minus of a certain amount of delay of one side of a stereo track is determined by ear. You can play with it to a degree
just for tonal effect but the range of delay is limited by the onset of the Haas Effect where perceived localization of the sound starts
to move to the left or right.

Naturally these small adjustments are more audible and consistent listening with headphones versus with speakers where you
yourself may be moving around and where there are more audible room acoustic reflections while you are listening to adjustments.

I like to select or not select a track delay prior to adding reverb as I feel it has a noticeable effect on reverb (especially mono reverb).

You often hear or read about the importance in stereo recording of having the microphones equidistant to virtually the inch from the
sound source to prevent or lessen phase issues. I can't say I agree with this in the case of recording an acoustic guitar, however even
if I did the effect of small differences in distances can be easily compensated with post recording micro delays.