I've had an autobrush and at first I liked it. It works.
But:-
1. The on/off valves stick in the off position after a while and need re-assembling.
2. I find that you can inadvertantly switch off the brush when working in awkward spaces and if working at the end of a long pole it's a pain to switch back on.
3. When doing doors with handles or behind drain pipes on some conservatories the back of the autobrush often catches where a normal brush doesn't.
That's why I went to a tap on my hip. (sounds like a medical consdition!
)