David DeBruyn contrasts the three at Churches without Chests.
In my own life, I have experienced the difference it has made to recognise and practice these two tones. During the day, I cannot pray as succinctly or concisely as I might like, so my prayer is made up of momentary phrases, short observations, even unarticulated sentiments – a lot more conversational and colloquial, without, I hope, being irreverent. But in times of private devotion, I have found that a short, carefully worded, ‘prayer of address’ is far more helpful to thoughtful worship, than a lot of rambling conversational prayer and consequent wandering of mind. Like a letter, such a prayer cannot be long, for most of us cannot sustain that kind of precision for very long. But the clarity, reverence, and, ironically, sincerity it brings has been very helpful to me. This also explains why Christians have often written down some of their prayers, because they are artfully-composed addresses to God. No one writes down his conversational impromptu prayers, nor have the sermons of ramblers been recorded for posterity.