I received my G4 Thursday!
Here's what I've learned so far:
It works real good-if it runs over it, it sucks it up!
It loves the deep end!
With the hose weight 1 meter from the head, it works well in the deep end but not in the shallow end.
With the hose weight off, it works well in the shallow end, but not in the deep end.
I need more hose to run it from the skimmer in the shallow end and more hose is expensive.
I cannot run both skimmers and the bottom suction with the G4 running from either skimmer.
If I want 100% clean, I have to touch up with the manual vac a little.