I've used both the aquadapter and aquatap.
The aquadapter is very good but it does add some weight to the end of your pole. It has a very positive action and makes a great 'gun loading' noise when using it. It adds a few inches to your pole length and I have gone through a few worn springs (cheap to buy and easy to replace).
The aquatap works by holding the pole and twisting the brush, or holding the brush solid and twisting the pole. I find the easiest way to use this is to wedge the brush in the top corner of the first floor window, or under the window sill. It is lighter on the end of the pole than the aquadapter and also adds a couple of inches to the length of your pole. I had to adjust my aquatap to make it harder to turn on and off (it was too quick to turn itself off when working). Also it works better with extreme light brushes rather than a sill brush for instance.
Overall I use the aquatap all the time. It does take some getting used to but once mastered you can turn the water on and off nearly instantly. Also I have problems with my shoulder at the moment so the less weight on the end of the pole the better. Anything above 3 floors and I use a normal inline tap. Hope that helps
