Replying to 4G LTE Tablet For Photographers

I made a thread a while ago asking about how to make my computer 4G LTE capable, got some good answers, but decided not to go that route with my computer. I'm going to be traveling around a lot in the next few years, so lunking around a computer and a charger won't be ideal, especially if the only thing I have to charge it is a small solar panel.

So I've been looking at different tablets that are 4G LTE capable, but I need one that I'll be able to upload my photographs to, so has a USB plug in. Does any have a specific tablet in mind? For the on-the-go photographers, what do you use? Are there certain devices that work better than others, pertaining to battery life, image quality, ease of use, all that jazz.

Thanks for the help, I'll continue looking myself, but I would appreciate the help.