I got my Vox for Xmas and I've enjoyed it very much for the last few weeks.
I'm using it for reading, gMail, and Overdrive, same as you, Paul. But over here library books are free, we don't have to rent them. (Do you really have to pay for them, Paul? How does that work?)
Having said that, I do have a few quibbles: I wish the processor was faster - things load a lot slower than my cheapie aPhone and that drives me nuts!
Also, I find it fiddly and not very intuitive - it took me quite a while to get Overdrive installed and working and I was already familiar with Kobo on my laptop and ADE for library books!
And I haven't even tried to do anything fancy yet like sideload books or install many other apps, though I did manage to get some more free books from Gutenberg.
I like to say that the Vox is more than an eReader, it's a whole new hobby!
