I have been using a Galaxy Tab for the last couple of years and find it very convenient for a lot of tasks but especially reading Ebooks. I run the Amazon Kindle App along with several other eReader Apps.
Even on Amazon I generally download the complete book rather than leaving it in the “Cloud”. I like to have easy access even when I am in outlying areas.
I actually purchased the Galaxy Tab because it has a built in GPS and the Aviation Apps were superior to both of the Aviation GPS units that we were using in our airplane. There is almost nothing the darn thing won’t do.
We have a 10 inch Galaxy something, great for watching vids, as a hotspot, but oddly enough, it won’t format one of my books, says not formatted for this screen size! Weird, huh?