I am currently using this in our meeting room. The other stand alone design is good for behind the desk or tucked away. WIth this circle charge, we are able to access our phones at the same time, withouth having to trouble or knocking over the tower. We've used all 6 ports at once, and it doesn't overheat ; so far so good.
The size of this is like the Echo Dot, so it doesn't take up much space.
If you're looking for something small or even to sit underneth the Echo Dot, this is the device to go.