Buy both if you can find them. ADG will probably give you thicker necks if you want to cut them back, but I've had good results with either. No way to know for sure until you compare them side by side.
...you best buy any casing you can get and afford...just like all the rest of these new fangled not for long promotional cartridges....been looking for casings for some of my own mistakes..
I've been using Nisler cases that were from Nosler ammo. The brass is pretty consistent and I've got about 7 loads on some that are still going strong.