Like "James I care about both the absolute (so that I'm in the non-diabetic range at all times and am not causing damage) and the difference (since it is indicative of how well I'm handling what I am eating). In case 1, I would take a look at what I ate and if possible reduce carbs/protein or add more fat. In case 2, I would be concerned that my BG doesn't return to normal non-diabetic numbers between meals. If tweaking my diet didn't fix either case, and the spikes are over 140, I would consider adding/tweaking medication."