I bought a BeBook, which is a rebranded Hanlin. Why?  Because it's an open platform: I run OpenInkpot on it, and I even could write my own software for it if I wanted to.  It doesn't have wifi, but I don't miss it; I copy ebooks and texts on it using the USB cable.  It displays flat plain text files fast and well. As for readability on portable electronic devices, nothing can beat an e-Ink display in the bright sun ;-)