There are a lot of differences between the Touch and the Vox (I have both).
The Touch, in my opinion is a much better platform for simply reading.
Much lighter and easier to hold.
Many more formats that you can read with the native reading app.
( I have 5-6 reading apps on my Vox and none are really what I want.)
You can charge with any computer with USB ports.
A charge lasts for at least a week, the Vox needs to be charged every day.
You may want to check the various threads before making a decision to keep the Vox.