I would look at a pocket wifi.
While we have wifi at home, we use a telstra pocket wifi for our ipads when travelling and it works fantastically.
This we do the same, its great. It could also run your laptop, you wouldn't need the USB one anymore
Also if you buy a different brand won't you have to re0buy all your music because I'm pretyy sure you won't be able to access itunes
Edited by cward, 29 January 2013 - 10:01 AM.