This matches my experiences:
Executive summary in case you donâ€™t feel like reading the rest of this article: They like it. A lot. Ninety-eight percent say theyâ€™re satisfied with their iPads overall; ninety-six percent think itâ€™s a good value. In category after categoryâ€“3G service, most of the individual bundled apps, battery life, speed, the absence of Flashâ€“a majority of respondents are pleased.
As does this:
Interestingly, Nielsen’s results appear to show that reading on the iPad is significantly faster compared to the Kindle 2. But Nielsen was quick to dismiss this conclusion arguing that the reading speeds between the two devices were “not statistically significant.” “The difference [between reading times on the iPad and Kindle 2] would be so small that it wouldn’t be a reason to buy one over the other,” Nielsen wrote.
The study also asked each user to rate how they liked each format on a scale of 1 to 7. The iPad, Kindle 2, and printed book were nearly tied at 5.8, 5.7, and 5.6 respectively, while the PC monitor ranked last at 3.6 points. The test subjects said that reading on the PC felt too much like being at work, while they found it more relaxing to read a printed book than on an electronic device.