This is the best version of this type of device we have ever had. In changing the faucet on our bar sink, we took advantage of an extra hole that was left to install this. The installation was very simple and in our case we just needed the plumber for the water line.
We have tea daily and this provides instant hot water at the perfect temperature for steeping tea. We've also discovered that it speeds up any sauce or gravy making exponentially. 
This model is a very sleek push button design and it is a great value for the price.