[GrumpyDave]

Since you want to avoid continual manual sorting as tasks are added and removed, you might consider splitting it into two or three single-action lists. Name them appropriately (high, medium, low, etc.) and then just move tasks between them as needed during reviews or whenever. Then you won't need to worry about sorting or moving tasks up and down as a measure of priority and it'll be easy to focus on the priority you wish to work on at any moment.