Might be worth waiting for the Amazon tablet that is due out August/September. Tablets are really all about the end to end experience and the others on the market so far have found it really hard to also compete with Apple on price, weight and battery life. Amazon tablet might be able to compete as they have a whole ecosystem behind the scenes to push and manage content and apps. You only have to look at the Kindle 3G to see a well thought out simple device. I still find it amazing that I can download a magazine to the Kindle on a beach in Greece and it costs me nothing network wise. You buy the mag or book and Amazon just deal with the rest of getting it to you and all the cost involved. No need to log onto networks, find wifi, have separate data package etc. I think if they can bring this type of thing to the tablet market then they might be onto an iPad killer.
ARM announced last week that their sales figures for chips were predicted to be down as loads of manufactures are putting tablets releases on hold or scaling back production as they just cant work out a way to compete with Apple yet. I think they have realised its not just the hardware specs.
Until they can work out a better complete ecosystem and experience for the bog standard non IT consumer then I think they will struggle with Apple.
I would get an iPad or wait for the Amazon tablet and see what they is like.