thanks for all the input guys.
a few clarifications & comments.
1. my thread- my rules. so when I say that I only want to know about epub devices I no not need the preaching about how easy it is to use Kindles , thnks - been there done that, not going back. End of.
2. diitto for the preaching about why I should NOT get a tablet. I'd like to consider that.
3. ditto for the "helpful" go back to paper idea - papyrus scrolls are tempting though
I buy almost all the time from Amazon & I convert to epub- no problems there. So I am not interested in other walled garden stores, unless I ever find one that is cheaper. hence my opening "spec" - I only want to know about sideloading.
I also read from Library epub loans, via ADE & calibre sideloads, so sideloads also covers the lending aspect also
( I have assumed that all the main epub devices support ADE authorisations - maybe I should have added that to the list though )
I do want to consider a tablet , as a secondary reading device - to have larger screen, colour.... I DO want to know what if any tablets WILL work as is without going to geeksville to install apps & jailbreaks & what have you. I got well bitten in another thread fro criticism of calibre companion as being a paid-for add on so lets not go there again. IF all tablet need that , then lets concede that point - put I am surprised if none allow simple USB sideloading. how else would you add your existing video & music files ?
PS I have no ides what this means but I have 64 bit Windows 7 if that helps
"Android devices are not USB unfriendly as long as your computer supports MTP."
can we keep anything to do with tablets at the "for absolute dummies" level please.