Best Infusion Site for Medtronic 670?

I loved the mio when I was on Medtronic. (for 12 years, although the mio didn't exist that whole time. )

I have always used my abdomen or my thighs I had Medtronic at one point but I now have tandem t slim like it so much better I have dropped my A1C by 2 with it

I personally really like the mio. Entirely self contained, no serter necessary, downside is waste.