I have owned the Original Echo since its pre-release in November 2014 and use it every day. The Echo Show is a screen version which I hoped would sound better. Here are the results.
Amazon Echo Show http://amzn.to/2tvsQyJ
Amazon Echo Original http://amzn.to/2saZD8G
Amazon Echo Dot http://amzn.to/2tu2kGk
Wemo Switches https://goo.gl/95AADP
Ring Doorbell http://amzn.to/2ttTM29