I've been doing a Type 2 study that got me six months with a CGM (a Dexcom 5, to be specific). Holy crabs, what a life changer. I'd spent the past year testing twice a day and always having those readings be within about a 15-point range, which confused the stuffing out of me. To be able to look back at a 6, 12, or 24hr period and see just what my levels were ACTUALLY doing was amazing.