This is a few days old, but I wanted to comment here on H-P's iPad rival
H-P's Slate 500 tablet can be bought on the company's website for $799—above the price of most iPads, which range in price from $499 to $829, depending on storage space and wireless connectivity.
I don't think that this new tablet will perform poorly from a sales perspective, but it is smaller, more expensive, and lacks built-in broadband capability. I think this hurts it's use as a business device, and given its ability to run Windows, seems more likely to cannibalize laptop sales.
I continue to be very happy with my iPad.