i used GG3 i have ordered GG4 (i didnt know 1 was soft and the other hard water, i live in a hard water area)
I know people have said to give it a few weeks to get used to it
This morning i found it very hard to use, but got the hang of it now i guess
BUT
I still have to wipe around the outside edge of the glass
, i was under the impression "Water actually draws away from the edges", this is the case but its only 1 or 2 mm, thus you still need to wipe around, thus meaning a window takes twice the time