[a bit off thread topic, but replying to the OP]
Yeah, i mean i don't correct at a 7 if i still have insulin in my system, but if its 5 hours after my last meal and I am anywhere above 6.5 i will give a small correction to nudge me back into the 5s. I can do this because I am on the pump and can give doses as low as 0.05units, where as if you are on MDI you would need a half unit pen to give a dose down to 0.5u.
Its up to the individual if they care that much - on a pump though its a no brainer, you already have the infusion set in might as well push a button 3 times - so thats a huge benefit to a pump.