I like my new iPad so far, but what I hate the most are just teething problems that needs to be sorted out and the confusion over the designs of the apps.
For example: I saw screenshots of some apps in magazines, on Internet, and I ever tried out the demo iPad in the shop, and I think: "I like the way that app do so and so." Only when you get that app (or that it may be iPad's own built in app) and you find it works in a different way. You end up wondering if the app you saw is eariler version than the one you're using, or if it is a later version. You sometimes wonder if you misunderstood the app, like thinking: "Did I get the wrong app? What was it I was supposed to do?"
Take the built in calendar for example, I thought you could have different sections of calendar, ie: Work, Home, Personal, Holidays, etc., so you could enter a date and an event and have it assigned in Home calendar, and so on. My iPad calendar just shows only one.
That's the only problem, just seeing something I like, only to find it don't do what I expected it to do, as well as any other teething problems, but otherwise, I like the iPad most of the times.