That was very informative I am wanting to do the same thing I do with a book read it camping, in the car, before bed, at home if I get time. BF says look at tablets cause they do more but my phone does those things but he has a work phone which is not a smart phone so he doesn't have access to those things. My battery life on my phone is terrible so would not read with it as well even if it had a bigger screen. I would not care if he got a tablet as well as getting an e reader but might be a waste of money then.
Well if you want something that can replace a book, get an ereader. Tablets are great, I have one that I take away with me, but ereaders are significantly better for reading, they're lighter and their batteries last weeks rather than hours. This means you only need to charge it once before you take it away anywhere, unlike a tablet or phone which is daily or every 2 days.
The advantage of a tablet is that you could play games, browse the web and watch movies, but lets face it you're away. Reading a book is very different in that respect. So just get an ereader.
Have a look at the Kindles, Sonys and new Kobo ereaders. They are all good options. I'd also suggest keeping an eye on gumtree/ebay as you can generally get good condition second hand ereaders very cheap! (that's what I did for my kindle!).
