Looked at the various tablets for use when traveling. Had been dragging around a netbook for a couple of years, and that was great for essentially unlimited back up, review, and even some minor editing, even RAW. Especially after switching to Micro 4/3 format, I wanted to slim down my packing.
Already have iPhone and a first gen iPad at work. Looked at the Android tablets, but didn't see/try any that really impressed me. Mostly I wanted something LIGHTWEIGHT and ideally that I could stow away in my camera bag. The full iPad was bigger than I wanted as was new Nexus 10, which seemed like a good candidate, too.
Settled on the iPad mini. Screen is fine for review of day's shots. Some editing capability if I want to generate some quick jpegs for emailing. But I do all my post processing after I get home anyway (Lightroom). Getting my RAW photos onto/off the iPad is a cinch and you don't need iTunes for any of that.* The camera kit or SD adapter both work just fine. Well built and nifty to use. The biggest capacity mini with 64GB was on sale and that gives me, at least, plenty of room for backups. Light as a feather, too. Slips right into the bag.
*in fact I've found that I rarely need to use iTunes for anything but backing up the mimi to my computer, ISO upgrades, etc. And then only since I am not using iCloud at all. And I can get just about any kind of document or file into/off the mimi via Dropbox.