The world renowned and very expensive Hans Grohe range of kitchen and bathware have what may be judged as the best design taps and showers available. For instance, look at this kitchen mixer.
If I was able to improve on its design, by removing the lever and installing intuitive touch controls, I guess it might look like this: (Which just happens to be a picture of the faucet on our Delphi water ionizer)
Here's a look at what I think is an amazing work of water-art. If you love water I know you're going to love this website. I attempted to watch his videos - alas - to no avail. Go here