What do you think of the WS15 backpack?
Only prob is no speed setting 
no probs with one speed comes out at just the right speed for me
once the water gets to brush,if its too quick for you fit a hoselock
on off tap on to reduce flow or make a return from the hose to the
pack so not all the water is going to the brush.
ive got a couple of ws15 and the ony prob ive had with them is
the switch they dont last long being underneath. i fix my own exterior
switches on them and they are good as gold.
