personally I would avoid Samsung after an underwhelming experience with a 10 inch thing of theirs. Overpriced - lots of pre-installed junk, some of which hard/impossible to uninstall.
7 inch is good for other use as an ereader.
I recommend taking a look at Lenovo.
Recently got a Lenovo 8 inch with a mobile Sim - ideal - particularly if paired with a small chromebook - they will sync.
My advice - avoid Samsung, avoid 10 inch, go android, pair your tab max 8 inch and use the saved dosh to get a small chromebook.
(you will of course have to reconcile yourself to the fact that google will know even more about you than some of our dodgier mods)
oh - sorry
@Cycleops would avoid the apple so sue me route.