You know what? All e-readers work.
I have a Nook1 & Kindle3 & a Sony350. I bought the Kindle a year ago because the selection was bigger & I found prices on some books cheaper.
Not so anymore. So I think you choose the reader you are most comfortable with & then enjoy reading.
We all have our preferences. Some like buttons, some like touch & some like having both options. Some prefer shopping at Amazon, some at B&N & some at a variety of other stores. I like being able to shop at a variety, but have shopped at B&N & Amazon also.