First eReader

I want to buy an ereader, I've never had it but I've always used an android tablet in night mode, with the cool reader app. I do not want a Kindle, they recommended Kobo but I'm open to other brands (I want to buy on amazon.it) I'm looking for an ereader with these features:

Having side lighting
Have Dictionary Ita-Eng for translations of sentences while I read a book in English
Ability to underline and export everything in a single text file
Synchronization with personal library of Caliber on cloud (gDrive or Dropbox), but I could also do without it

Even better would be to be able to underline with a mouse / pen and have the text to speech, but for these characteristics maybe I should turn to tablet again.

They advised me to hack a kobo and use the KoReader player, but I do not know if it supports everything.