The Likebook may be a good upgrade. I was interested in it myself, due entirely to the better hardware than most ereader devices, and to the fact it runs Android so one could install other apps.

However, I'd exercise caution. I decided not to go that route, as the OS is based on Android 6 which is rife with serious security flaws. Say that you start using it the way it was intended, you install various Android apps for convenience, you give it your Gmail credentials (which you may also use to access other sites, etc.). Then let's say somebody exploits one of those Android 6 flaws and gets your credentials, or some of your other private data. It's a real risk, and a real design flaw with these devices that are based on Android 6 or earlier.

Bottom line: for myself I'm going to stick with either low-risk, dedicated ereader devices that are just for books, or with tablets or PC's that are able to run the full modern versions of whatever OS they are based on, so that there's a reduced attack surface and security holes are plugged regularly.