I use a Kobo reader. Its pretty nice actually. I can dump books on it via usb, or over the network via dropbox. Or use Indigo to buy books.
But I am also surprised to learn that some software-only features are not included in updates to older devices. I have a Kobo Glo, and despite having finished an update less than fifteen minutes ago I don’t have the Dropbox syncing feature.
https://help.kobo.com/hc/en-us/articles/360033830114-Add-boo...