Go for ther ipad 3 as it is much better than the 2. Screen is much clearer and it's thinner and lighter than the 2 as well. Siri is very good and you will love that program. We use ours to talk to our son in Thailand on facetime - awesome feature.
You can by on Tesco Direct and pick it up at the local store I think. I'm more than certain to get one tomorrow. Not bothering with 3g though as I have my iphone for that.