Coor, what do you mean "the 25 packs were a good bonus"? The Sandbagger doesn't come with that does it?
I'm loving the Mirlon Total. Personally, I cut them in half and have actually been throwing them away after one use. $20 for a 25 pack and always having a fresh surface for less than a buck? Yes please.
I tried the 360 in a sample pack... DANG! That takes off a lot. Mini resurfacing at least. I wouldn't use them every time, but it takes off more than anything else I've seen. I bought some 500 Sia to see if that will work as a base.