I love my Faraday Porteur S. I'm a bike commuter and it helps me get around town without being a sweaty mess. I chose these principally because of the design - they're gorgeous. I also like that it's got enough bicycle DNA that I can switch off the power and get proper exercise when I want to, while still feeling like I'm riding an awesome standalone bicycle.
It's like an awesome, beautiful bicycle, plus power. No shortcuts on the bicycle part.
There are other electric bikes on the market with more power and more range.