3G or not depends on how much you'll be using away from wifi. I've got a wifi iPad, it never leaves the house, while my 3G 7.7 goes everywhere with me. I could tether to my phone, I've got unlimited data with Three here in the UK, but it's a pain because I use the 7.7 a lot. As such, I'm glad I got a 3G, and I buy 3gb/3months pay as you go sims off Amazon for